{"id":3867,"date":"2024-03-18T06:10:08","date_gmt":"2024-03-18T06:10:08","guid":{"rendered":"https:\/\/3dp.45612300.xyz\/product\/niobium-powder\/"},"modified":"2024-03-18T06:10:08","modified_gmt":"2024-03-18T06:10:08","slug":"niobium-powder","status":"publish","type":"product","link":"https:\/\/3dpmetal.com\/cs\/product\/niobium-powder\/","title":{"rendered":"Pr\u00e1\u0161ek niobu"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"><\/p>\n<h2>P\u0159ehled pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Niob je leskl\u00fd, b\u00edl\u00fd \u017e\u00e1ruvzdorn\u00fd p\u0159echodn\u00fd kov s vynikaj\u00edc\u00ed tepelnou odolnost\u00ed a velmi vysok\u00fdm bodem t\u00e1n\u00ed. Ve form\u011b pr\u00e1\u0161ku vykazuje vynikaj\u00edc\u00ed tepelnou, elektrickou a chemickou stabilitu.<\/p>\n<p class=\"whitespace-pre-wrap\">Mezi kl\u00ed\u010dov\u00e9 vlastnosti niobov\u00e9ho pr\u00e1\u0161ku pat\u0159\u00ed:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">Vysok\u00e1 tepeln\u00e1 odolnost a \u017e\u00e1ruvzdornost<\/li>\n<li class=\"whitespace-normal\">Vynikaj\u00edc\u00ed odolnost v\u016f\u010di korozi<\/li>\n<li class=\"whitespace-normal\">Supravodivost pod 9,2 K (-264\u2032\"C)<\/li>\n<li class=\"whitespace-normal\">Tepeln\u00e1 a elektrick\u00e1 stabilita<\/li>\n<li class=\"whitespace-normal\">N\u00edzk\u00e1 absorpce neutron\u016f<\/li>\n<li class=\"whitespace-normal\">Pr\u00e1\u0161ek s vysokou hustotou a dobrou chemickou \u010distotou<\/li>\n<li class=\"whitespace-normal\">K dispozici v r\u016fzn\u00fdch velikostech \u010d\u00e1stic<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161kov\u00e9 niobium se pou\u017e\u00edv\u00e1 tam, kde lze vyu\u017e\u00edt jeho \u017e\u00e1ruvzdorn\u00fdch, vodiv\u00fdch a supravodiv\u00fdch vlastnost\u00ed. Mezi hlavn\u00ed aplikace pat\u0159\u00ed elektronika, supravodi\u010de, slitiny, chemicky\/tepeln\u011b odoln\u00e9 sou\u010d\u00e1sti, optick\u00e9 povlaky a pyrotechnika.<\/p>\n<h2>Slo\u017een\u00ed pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161ek niobu m\u00e1 n\u00e1sleduj\u00edc\u00ed typick\u00e9 slo\u017een\u00ed:<\/p>\n<table>\n<thead>\n<tr>\n<th>Element<\/th>\n<th>\u010cistota<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Niob (Nb)<\/td>\n<td>99% min<\/td>\n<\/tr>\n<tr>\n<td>Tantal (Ta)<\/td>\n<td>max. 0,5 %<\/td>\n<\/tr>\n<tr>\n<td>Hafnium (Hf)<\/td>\n<td>Max. 0,01 %<\/td>\n<\/tr>\n<tr>\n<td>Dus\u00edk (N)<\/td>\n<td>max. 0,03 %<\/td>\n<\/tr>\n<tr>\n<td>Uhl\u00edk (C)<\/td>\n<td>Maxim\u00e1ln\u011b 0,05 %<\/td>\n<\/tr>\n<tr>\n<td>Kysl\u00edk (O)<\/td>\n<td>0.1-0.2%<\/td>\n<\/tr>\n<tr>\n<td>Vod\u00edk (H)<\/td>\n<td>0,0015% max<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161ek niobu vysok\u00e9 \u010distoty obsahuje v\u00edce ne\u017e 99% kovov\u00e9ho niobu s n\u00edzk\u00fdm obsahem ne\u010distot. Komer\u010dn\u00ed druhy maj\u00ed vy\u0161\u0161\u00ed p\u0159\u00edpustn\u00e9 mno\u017estv\u00ed ne\u010distot.<\/p>\n<h2>Vlastnosti pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161kov\u00e9 niobium vykazuje n\u00e1sleduj\u00edc\u00ed vlastnosti:<\/p>\n<table>\n<thead>\n<tr>\n<th>Nemovitost<\/th>\n<th>Hodnota<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hustota<\/td>\n<td>8,57 g\/cm3<\/td>\n<\/tr>\n<tr>\n<td>Teplota t\u00e1n\u00ed<\/td>\n<td>2477\u00a1\"C<\/td>\n<\/tr>\n<tr>\n<td>Tepeln\u00e1 vodivost<\/td>\n<td>53 W\/m?K<\/td>\n<\/tr>\n<tr>\n<td>Elektrick\u00fd odpor<\/td>\n<td>15 \u00c3\u00d7\u00b4\u00ce?cm<\/td>\n<\/tr>\n<tr>\n<td>Young\u016fv modul<\/td>\n<td>105 GPa<\/td>\n<\/tr>\n<tr>\n<td>Poisson\u016fv pom\u011br<\/td>\n<td>0.40<\/td>\n<\/tr>\n<tr>\n<td>Pevnost v tahu<\/td>\n<td>550 MPa<\/td>\n<\/tr>\n<tr>\n<td>Tlakov\u00e1 pevnost<\/td>\n<td>200 MPa<\/td>\n<\/tr>\n<tr>\n<td>Tvrdost podle Vickerse<\/td>\n<td>600 HV<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"whitespace-pre-wrap\">Niob m\u00e1 extr\u00e9mn\u011b vysok\u00fd bod t\u00e1n\u00ed a velmi dobrou vodivost. Nab\u00edz\u00ed vysokou pevnost p\u0159i n\u00edzk\u00fdch i vysok\u00fdch teplot\u00e1ch. Teplota supravodiv\u00e9ho p\u0159echodu je 9,2 K.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-medium wp-image-1409 aligncenter\" src=\"https:\/\/met3dp.com\/wp-content\/uploads\/2023\/09\/ed7a94ec-3c10-4b1b-87ed--300x300.jpg\" alt=\"Pr\u00e1\u0161ek niobu\" width=\"300\" height=\"300\" title=\"\"><\/p>\n<h2>Metody v\u00fdroby pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161kov\u00e9 niobium lze vyr\u00e1b\u011bt metodami, jako jsou:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>Hydridace a dehydridace<\/strong>?- Niobov\u00e9 ingoty rozdrcen\u00e9 na hrub\u00fd pr\u00e1\u0161ek a hydridovan\u00e9. Hydrid niobu je vakuov\u011b dehydridov\u00e1n a rozemlet na jemn\u00fd pr\u00e1\u0161ek.<\/li>\n<li class=\"whitespace-normal\"><strong>Kalciotermick\u00e1 redukce<\/strong>?- Redukce oxidu niobu v\u00e1pn\u00edkem s n\u00e1slednou konsolidac\u00ed a drcen\u00edm na pr\u00e1\u0161ek.<\/li>\n<li class=\"whitespace-normal\"><strong>Elektrol\u00fdza<\/strong>?- elektrol\u00fdza oxidu niobu roztavenou sol\u00ed za \u00fa\u010delem z\u00edsk\u00e1n\u00ed niobov\u00e9 houby, kter\u00e1 se rozdrt\u00ed na pr\u00e1\u0161ek.<\/li>\n<li class=\"whitespace-normal\"><strong>Sn\u00ed\u017een\u00ed emis\u00ed uhl\u00edku<\/strong>?- Oxid niobu se redukuje uhl\u00edkem a zpracov\u00e1v\u00e1 se na pr\u00e1\u0161ek.<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Nej\u010dast\u011bji se pou\u017e\u00edv\u00e1 hydridace, ale uhl\u00edkov\u00e1 a elektrotermick\u00e1 redukce nab\u00edz\u00ed pr\u00e1\u0161ek vy\u0161\u0161\u00ed \u010distoty.<\/p>\n<h2>Aplikace pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161kov\u00e9 niobium se pou\u017e\u00edv\u00e1 v n\u00e1sleduj\u00edc\u00edch hlavn\u00edch aplikac\u00edch:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>Elektronika<\/strong>?- Kondenz\u00e1tory, supravodiv\u00e9 radiofrekven\u010dn\u00ed dutiny, Josephsonovy p\u0159echody, integrovan\u00e9 obvody.<\/li>\n<li class=\"whitespace-normal\"><strong>Slitiny kov\u016f<\/strong>?- P\u0159id\u00e1v\u00e1 se do ocel\u00ed a slitin na b\u00e1zi niklu pro zv\u00fd\u0161en\u00ed pevnosti a tepeln\u00e9 odolnosti.<\/li>\n<li class=\"whitespace-normal\"><strong>N\u00e1t\u011bry a barvy<\/strong>?- Pou\u017e\u00edv\u00e1 se ve vodiv\u00fdch n\u00e1t\u011brech, n\u00e1t\u011brech odoln\u00fdch proti jiskr\u00e1m, optick\u00fdch n\u00e1t\u011brech.<\/li>\n<li class=\"whitespace-normal\"><strong>Sva\u0159ov\u00e1n\u00ed<\/strong>?- Jako v\u00fdpl\u0148ov\u00fd materi\u00e1l pro nerezovou ocel, niklov\u00e9 slitiny a \u017e\u00e1ruvzdorn\u00e9 kovy.<\/li>\n<li class=\"whitespace-normal\"><strong>Chemick\u00fd pr\u016fmysl<\/strong>?- Komponenty jako tepeln\u00e9 v\u00fdm\u011bn\u00edky, reaktorov\u00e9 n\u00e1doby vyu\u017e\u00edvaj\u00edc\u00ed stability niobu.<\/li>\n<li class=\"whitespace-normal\"><strong>Oh\u0148ostroj<\/strong>?- Jako palivo a okysli\u010dovadlo v pyrotechnick\u00fdch p\u0159\u00edpravc\u00edch.<\/li>\n<\/ul>\n<h2>Specifikace pr\u00e1\u0161ku niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161ek niobu je k dispozici v r\u016fzn\u00fdch specifikac\u00edch:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>Stupn\u011b \u010distoty<\/strong>?- Od komer\u010dn\u00ed \u010distoty po ultra vysokou \u010distotu (99,99%) na z\u00e1klad\u011b ne\u010distot.<\/li>\n<li class=\"whitespace-normal\"><strong>Velikost \u010d\u00e1stic<\/strong>?- Od 1 mikronu do 150 mikron\u016f pro r\u016fzn\u00e9 aplikace.<\/li>\n<li class=\"whitespace-normal\"><strong>Morphologie<\/strong>?- Nepravideln\u00e9, kulovit\u00e9, kyjovit\u00e9 a vlo\u010dkovit\u00e9 tvary pr\u00e1\u0161ku.<\/li>\n<li class=\"whitespace-normal\"><strong>Povrchov\u00e1 plocha<\/strong>?- Od pr\u00e1\u0161kov\u00fdch materi\u00e1l\u016f s n\u00edzk\u00fdm povrchem a\u017e po pr\u00e1\u0161kov\u00e9 materi\u00e1ly s vysok\u00fdm povrchem.<\/li>\n<li class=\"whitespace-normal\"><strong>Obsah kysl\u00edku<\/strong>?- K dispozici jsou tak\u00e9 jemn\u00e9 pr\u00e1\u0161kov\u00e9 druhy s n\u00edzk\u00fdm obsahem kysl\u00edku.<\/li>\n<li class=\"whitespace-normal\"><strong>Vlastn\u00ed t\u0159\u00eddy<\/strong>?- Specifick\u00e9 vlastnosti a \u010distota \u010d\u00e1stic podle z\u00e1kazn\u00edka.<\/li>\n<\/ul>\n<h2>Glob\u00e1ln\u00ed dodavatel\u00e9 pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Mezi hlavn\u00ed sv\u011btov\u00e9 dodavatele niobov\u00e9ho pr\u00e1\u0161ku pat\u0159\u00ed:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">H.C. Starck (N\u011bmecko)<\/li>\n<li class=\"whitespace-normal\">CBMM (Braz\u00edlie)<\/li>\n<li class=\"whitespace-normal\">Niobec (Kanada)<\/li>\n<li class=\"whitespace-normal\">ESPI Metals (USA)<\/li>\n<li class=\"whitespace-normal\">Continental Steel &amp; Tube (USA)<\/li>\n<li class=\"whitespace-normal\">ZhuZhou Oriental Powder Metallurgy (\u010c\u00edna)<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Tyto spole\u010dnosti vyr\u00e1b\u011bj\u00ed r\u016fzn\u00e9 druhy pr\u00e1\u0161kov\u00e9ho niobu r\u016fzn\u00fdmi v\u00fdrobn\u00edmi metodami na komer\u010dn\u00ed a\u017e vysok\u00e9 \u00farovni \u010distoty.<\/p>\n<h2>Ceny pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">Ceny pr\u00e1\u0161kov\u00e9ho niobu z\u00e1vis\u00ed na faktorech, jako jsou:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>Stupe\u0148 \u010distoty<\/strong>?- Od $50\/kg pro komer\u010dn\u00ed \u010distotu a\u017e po v\u00edce ne\u017e $500\/kg pro t\u0159\u00eddy s velmi vysokou \u010distotou.<\/li>\n<li class=\"whitespace-normal\"><strong>Velikost \u010d\u00e1stic<\/strong>?- Nano- a submikronov\u00e9 pr\u00e1\u0161ky jsou dra\u017e\u0161\u00ed.<\/li>\n<li class=\"whitespace-normal\"><strong>Morphologie<\/strong>?- Sf\u00e9rick\u00e9 a hladk\u00e9 pr\u00e1\u0161ky maj\u00ed vy\u0161\u0161\u00ed cenu.<\/li>\n<li class=\"whitespace-normal\"><strong>Mno\u017estv\u00ed<\/strong>?- Ceny se sni\u017euj\u00ed u velk\u00fdch mno\u017estv\u00ed d\u00edky \u00faspor\u00e1m z rozsahu.<\/li>\n<li class=\"whitespace-normal\"><strong>V\u00fdrobce<\/strong>?- Hlavn\u00ed sv\u011btov\u00ed dodavatel\u00e9 nab\u00edzej\u00ed konkurenceschopn\u011bj\u0161\u00ed ceny.<\/li>\n<li class=\"whitespace-normal\"><strong>Zem\u011bpis<\/strong>?- Ceny se v r\u016fzn\u00fdch regionech sv\u011bta li\u0161\u00ed.<\/li>\n<\/ul>\n<h2>Skladov\u00e1n\u00ed a manipulace s pr\u00e1\u0161kov\u00fdm niobem<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161ek niobu vy\u017eaduje kontrolovan\u00e9 skladov\u00e1n\u00ed a manipulaci, aby:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">Zabra\u0148te p\u016fsoben\u00ed vzduchu a vlhkosti, abyste minimalizovali oxidaci.<\/li>\n<li class=\"whitespace-normal\">Vyhn\u011bte se nebezpe\u010d\u00ed vzn\u00edcen\u00ed a v\u00fdbuchu jemn\u00e9ho pr\u00e1\u0161ku.<\/li>\n<li class=\"whitespace-normal\">P\u0159i manipulaci pou\u017e\u00edvejte vhodn\u00e9 v\u011btr\u00e1n\u00ed a ochranu d\u00fdchac\u00edch cest.<\/li>\n<li class=\"whitespace-normal\">Dodr\u017eujte opat\u0159en\u00ed uveden\u00e1 v bezpe\u010dnostn\u00edm listu dodavatele.<\/li>\n<li class=\"whitespace-normal\">Skladujte uzav\u0159en\u00e9 n\u00e1doby na chladn\u00e9m a such\u00e9m m\u00edst\u011b mimo dosah neslu\u010diteln\u00fdch l\u00e1tek.<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">P\u0159i manipulaci s pr\u00e1\u0161kov\u00fdm niobem by se m\u011bly pou\u017e\u00edvat rukavice s inertn\u00edm plynem, \u0159\u00e1dn\u00e9 uzemn\u011bn\u00ed a osobn\u00ed ochrann\u00e9 pom\u016fcky.<\/p>\n<h2>Kontrola a testov\u00e1n\u00ed pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\">U pr\u00e1\u0161kov\u00e9ho niobu se obvykle prov\u00e1d\u011bj\u00ed n\u00e1sleduj\u00edc\u00ed kontroly a zkou\u0161ky:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>Chemick\u00e1 anal\u00fdza<\/strong>?- Induk\u010dn\u011b v\u00e1zan\u00e1 plazma nebo rentgenov\u00e1 fluorescence pro kontrolu slo\u017een\u00ed a \u010distoty.<\/li>\n<li class=\"whitespace-normal\"><strong>Testov\u00e1n\u00ed velikosti \u010d\u00e1stic<\/strong>?- Provedeno podle normy ASTM B822 pomoc\u00ed laserov\u00e9 difrak\u010dn\u00ed techniky.<\/li>\n<li class=\"whitespace-normal\"><strong>Morphologie<\/strong>?- skenovac\u00ed elektronov\u00e1 mikroskopie slou\u017e\u00ed k ur\u010den\u00ed tvaru a povrchu.<\/li>\n<li class=\"whitespace-normal\"><strong>Specifick\u00e1 plocha povrchu<\/strong>?- Metoda absorpce plynu BET se pou\u017e\u00edv\u00e1 k m\u011b\u0159en\u00ed plochy povrchu na jednotku hmotnosti.<\/li>\n<li class=\"whitespace-normal\"><strong>Testov\u00e1n\u00ed ne\u010distot<\/strong>?- ICP-MS se pou\u017e\u00edv\u00e1 ke kvantifikaci obsahu tantalu, kysl\u00edku, dus\u00edku a dal\u0161\u00edch ne\u010distot.<\/li>\n<li class=\"whitespace-normal\"><strong>Pr\u016ftok pr\u00e1\u0161ku<\/strong>?- Testov\u00e1no pomoc\u00ed Hallova pr\u016ftokom\u011bru podle normy ASTM B213.<\/li>\n<\/ul>\n<h2>Srovn\u00e1n\u00ed pr\u00e1\u0161ku z niobu a tantalu<\/h2>\n<p class=\"whitespace-pre-wrap\">Pr\u00e1\u0161ky niobu a tantalu jsou dva podobn\u00e9 \u017e\u00e1ruvzdorn\u00e9 kovov\u00e9 pr\u00e1\u0161ky:<\/p>\n<table>\n<thead>\n<tr>\n<th>Parametr<\/th>\n<th>Pr\u00e1\u0161ek niobu<\/th>\n<th>Tantalov\u00fd pr\u00e1\u0161ek<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Hustota<\/td>\n<td>8,57 g\/cm3<\/td>\n<td>16,6 g\/cm3<\/td>\n<\/tr>\n<tr>\n<td>Teplota t\u00e1n\u00ed<\/td>\n<td>2477\u00a1\"C<\/td>\n<td>2996\u00a1\"C<\/td>\n<\/tr>\n<tr>\n<td>Elektrick\u00fd odpor<\/td>\n<td>15 \u00c3\u00d7\u00b4\u00ce.cm<\/td>\n<td>13 \u00c3\u00d7\u00b4\u00ce.cm<\/td>\n<\/tr>\n<tr>\n<td>Pevnost v tahu<\/td>\n<td>550 MPa<\/td>\n<td>400 MPa<\/td>\n<\/tr>\n<tr>\n<td>Oxida\u010dn\u00ed odolnost<\/td>\n<td>St\u0159edn\u00ed<\/td>\n<td>Lep\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td>Cena<\/td>\n<td>Niz\u0161\u00ed<\/td>\n<td>Vy\u0161\u0161\u00ed<\/td>\n<\/tr>\n<tr>\n<td>APLIKACE<\/td>\n<td>Slitiny, kondenz\u00e1tory<\/td>\n<td>Zdravotnictv\u00ed, elektronika<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p class=\"whitespace-pre-wrap\">Tantal m\u00e1 vy\u0161\u0161\u00ed hustotu, bod t\u00e1n\u00ed a lep\u0161\u00ed odolnost proti oxidaci, ale je dra\u017e\u0161\u00ed ne\u017e niob.<\/p>\n<h2>Nej\u010dast\u011bj\u0161\u00ed dotazy t\u00fdkaj\u00edc\u00ed se pr\u00e1\u0161kov\u00e9ho niobu<\/h2>\n<p class=\"whitespace-pre-wrap\"><strong>Ot\u00e1zka: Jak se vyr\u00e1b\u00ed pr\u00e1\u0161kov\u00e9 niobium?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">Hlavn\u00ed metody v\u00fdroby pr\u00e1\u0161kov\u00e9ho niobu jsou hydridace-dehydridace, kalciotermick\u00e1 redukce, elektrol\u00fdza a redukce oxidu niobu uhl\u00edkem.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Ot\u00e1zka: K \u010demu se pou\u017e\u00edv\u00e1 pr\u00e1\u0161kov\u00e9 niobium?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">Hlavn\u00ed aplikace niobov\u00e9ho pr\u00e1\u0161ku zahrnuj\u00ed elektroniku, kovov\u00e9 slitiny, n\u00e1t\u011bry, chemick\u00fd pr\u016fmysl, sva\u0159ov\u00e1n\u00ed, pyrotechniku a supravodi\u010de.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Ot\u00e1zka: Jak\u00e1 je typick\u00e1 velikost pr\u00e1\u0161ku niobu pro povlaky nan\u00e1\u0161en\u00e9 tepeln\u00fdm n\u00e1st\u0159ikem?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">Odpov\u011b\u010f: Pro procesy tepeln\u00e9ho n\u00e1st\u0159iku se obvykle pou\u017e\u00edv\u00e1 niobov\u00fd pr\u00e1\u0161ek o velikosti \u010d\u00e1stic 45-150 mikron\u016f. Jemn\u011bj\u0161\u00ed pr\u00e1\u0161ek m\u016f\u017ee v\u00e9st k probl\u00e9m\u016fm s oxidac\u00ed.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Ot\u00e1zka: Je niobov\u00fd pr\u00e1\u0161ek ho\u0159lav\u00fd nebo v\u00fdbu\u0161n\u00fd?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">Odpov\u011b\u010f: Ano, stejn\u011b jako ostatn\u00ed jemn\u011b d\u011blen\u00e9 kovy m\u016f\u017ee b\u00fdt pr\u00e1\u0161ek niobu potenci\u00e1ln\u011b ho\u0159lav\u00fd nebo v\u00fdbu\u0161n\u00fd. Pro bezpe\u010dnou manipulaci a skladov\u00e1n\u00ed je t\u0159eba p\u0159ijmout vhodn\u00e1 opat\u0159en\u00ed.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Ot\u00e1zka: Kde mohu koupit pr\u00e1\u0161kov\u00e9 niobium vysok\u00e9 \u010distoty pro supravodiv\u00e9 aplikace?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">Odpov\u011b\u010f: Pr\u00e1\u0161ek niobu s velmi vysokou \u010distotou (99,99%) vhodn\u00fd pro supravodiv\u00e9 aplikace lze zakoupit od v\u00fdznamn\u00fdch dodavatel\u016f, jako jsou HC Starck, CBMM a ESPI Metals.<\/p>\n<p><\/span><\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>P\u0159ehled pr\u00e1\u0161kov\u00e9ho niobu Niob je leskl\u00fd, b\u00edl\u00fd \u017e\u00e1ruvzdorn\u00fd p\u0159echodn\u00fd kov s vynikaj\u00edc\u00ed tepelnou odolnost\u00ed a velmi vysok\u00fdm bodem t\u00e1n\u00ed. Ve form\u011b pr\u00e1\u0161ku vykazuje vynikaj\u00edc\u00ed tepelnou, elektrickou a chemickou stabilitu. Mezi kl\u00ed\u010dov\u00e9 vlastnosti pr\u00e1\u0161kov\u00e9ho niobu pat\u0159\u00ed: Vysok\u00e1 tepeln\u00e1 odolnost a \u017e\u00e1ruvzdornost Vynikaj\u00edc\u00ed odolnost proti korozi Supravodivost pod 9,2 K (-264 \u00a1\"C) Tepeln\u00e1 a elektrick\u00e1 stabilita...<\/p>","protected":false},"featured_media":1742,"parent":0,"template":"","meta":{"_acf_changed":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"_kad_post_classname":""},"product-category":[119,125],"class_list":["post-3867","product","type-product","status-publish","has-post-thumbnail","hentry","product-category-3d-printing-metal-powder","product-category-refractory-metal-powder"],"acf":[],"taxonomy_info":{"product-category":[{"value":119,"label":"3D Printing Metal Powder"},{"value":125,"label":"Refractory Metal Powder"}]},"featured_image_src_large":["https:\/\/3dpmetal.com\/wp-content\/uploads\/2024\/02\/Niobium-Powder.jpg",600,600,false],"author_info":[],"comment_info":"","_links":{"self":[{"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/product\/3867","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/media\/1742"}],"wp:attachment":[{"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/media?parent=3867"}],"wp:term":[{"taxonomy":"product-category","embeddable":true,"href":"https:\/\/3dpmetal.com\/cs\/wp-json\/wp\/v2\/product-category?post=3867"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}