{"id":3889,"date":"2024-03-18T06:10:10","date_gmt":"2024-03-18T06:10:10","guid":{"rendered":"https:\/\/3dp.45612300.xyz\/product\/ti22al25nb-powder\/"},"modified":"2024-03-18T06:10:10","modified_gmt":"2024-03-18T06:10:10","slug":"ti22al25nb-powder","status":"publish","type":"product","link":"https:\/\/3dpmetal.com\/ja\/product\/ti22al25nb-powder\/","title":{"rendered":"Ti22Al25Nb\u7c89\u672b"},"content":{"rendered":"<p><span style=\"vertical-align: inherit;\"><span style=\"vertical-align: inherit;\"><\/p>\n<h2>Overview of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb belongs to the class of titanium aluminide alloys that possess attractive properties like high specific strength, good creep resistance, oxidation resistance, and ability to withstand extreme temperatures. The near-equiatomic ratio of titanium and aluminum provides a balanced combination of light weight, strength and environmental resistance at elevated temperatures.<\/p>\n<p class=\"whitespace-pre-wrap\">Key characteristics of Ti22Al25Nb powder include:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">Very high specific strength (strength-to-weight ratio)<\/li>\n<li class=\"whitespace-normal\">Excellent high temperature mechanical properties<\/li>\n<li class=\"whitespace-normal\">Good creep and fatigue strength<\/li>\n<li class=\"whitespace-normal\">Low density compared to nickel and iron-based superalloys<\/li>\n<li class=\"whitespace-normal\">\u512a\u308c\u305f\u8010\u8150\u98df\u6027<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder has emerged as an excellent choice for reducing weight and improving efficiency in aerospace, automotive, and other high-performance applications at elevated temperatures.<\/p>\n<h2>Composition of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder has the following nominal composition:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30a8\u30ec\u30e1\u30f3\u30c8<\/th>\n<th>\u8cea\u91cf %<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u30c1\u30bf\u30f3\uff08Ti\uff09<\/td>\n<td>22%<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30eb\u30df\u30cb\u30a6\u30e0 (Al)<\/td>\n<td>25%<\/td>\n<\/tr>\n<tr>\n<td>\u30cb\u30aa\u30d6\uff08Nb\uff09<\/td>\n<td>5-10%<\/td>\n<\/tr>\n<tr>\n<td>\u30d0\u30ca\u30b8\u30a6\u30e0(V)<\/td>\n<td>0-5%<\/td>\n<\/tr>\n<tr>\n<td>\u30af\u30ed\u30e0<\/td>\n<td>0-2%<\/td>\n<\/tr>\n<tr>\n<td>\u70ad\u7d20\uff08C\uff09<\/td>\n<td>0-0.2%<\/td>\n<\/tr>\n<tr>\n<td>\u9178\u7d20 (O)<\/td>\n<td>0-0.2%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\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=\"Ti22Al25Nb\u7c89\u672b\" width=\"300\" height=\"300\" title=\"\"><\/p>\n<p class=\"whitespace-pre-wrap\">The amounts of strengthening elements like niobium and vanadium can be varied to optimize the mechanical properties. Impurity levels of carbon and oxygen are minimized.<\/p>\n<h2>Properties of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Key properties of Ti22Al25Nb powder include:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d7\u30ed\u30d1\u30c6\u30a3<\/th>\n<th>\u4fa1\u5024<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5bc6\u5ea6<\/td>\n<td>3.7-3.9 g\/cm3<\/td>\n<\/tr>\n<tr>\n<td>\u878d\u70b9 (Y\u016bten)<\/td>\n<td>1350-1450\u00a1\u00abC<\/td>\n<\/tr>\n<tr>\n<td>\u71b1\u4f1d\u5c0e\u7387<\/td>\n<td>16-22 W\/mK<\/td>\n<\/tr>\n<tr>\n<td>\u96fb\u6c17\u62b5\u6297\u7387<\/td>\n<td>1.7 \u00d8\u00d7\u00b4\u00ce.cm<\/td>\n<\/tr>\n<tr>\n<td>\u30e4\u30f3\u30b0\u4fc2\u6570<\/td>\n<td>160\uff5e180 GPa<\/td>\n<\/tr>\n<tr>\n<td>\u30dd\u30a2\u30bd\u30f3\u6bd4<\/td>\n<td>0.32-0.34<\/td>\n<\/tr>\n<tr>\n<td>\u5f15\u5f35\u5f37\u5ea6<\/td>\n<td>500-900 MPa<\/td>\n<\/tr>\n<tr>\n<td>\u964d\u4f0f\u5f37\u5ea6<\/td>\n<td>400-600 MPa<\/td>\n<\/tr>\n<tr>\n<td>\u4f38\u9577<\/td>\n<td>1-4%<\/td>\n<\/tr>\n<tr>\n<td>Creep Strength<\/td>\n<td>150-300 MPa<\/td>\n<\/tr>\n<tr>\n<td>\u6297\u9178\u5316\u6027<\/td>\n<td>Excellent up to 800\u00a1\u00abC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p class=\"whitespace-pre-wrap\">The properties like high strength, low density, and temperature capability make it well suited for critical aerospace components needing weight savings.<\/p>\n<h2>Production Method for Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder can be produced via methods like:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>\u30ac\u30b9\u30a2\u30c8\u30de\u30a4\u30bc\u30fc\u30b7\u30e7\u30f3<\/strong>?- High pressure inert gas jet used to atomize molten alloy resulting in fine spherical powder ideal for AM.<\/li>\n<li class=\"whitespace-normal\"><strong>\u30d7\u30e9\u30ba\u30de\u56de\u8ee2\u96fb\u6975\u30d7\u30ed\u30bb\u30b9\uff08PREP\uff09<\/strong>?- Centrifugal disintegration of rapidly rotating molten metal into fine droplets yields spherical powder.<\/li>\n<li class=\"whitespace-normal\"><strong>\u6a5f\u68b0\u5408\u91d1\u5316<\/strong>?- High energy ball milling of elemental\/pre-alloyed powders followed by annealing and secondary atomization.<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Gas atomization and PREP allow excellent control over powder characteristics like particle size distribution, morphology, and microcleanliness.<\/p>\n<h2>Applications of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder is used in:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>\u5897\u6750\u88fd\u9020<\/strong>?- Selective laser melting to produce complex lightweight components like brackets, airfoils, impellers for aerospace and automotive.<\/li>\n<li class=\"whitespace-normal\"><strong>\u30b5\u30fc\u30de\u30eb\u30b9\u30d7\u30ec\u30fc\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0<\/strong>?- Applied via plasma or HVOF spraying to provide wear\/corrosion resistance for turbocharger blades and aerospace components at high temperatures.<\/li>\n<li class=\"whitespace-normal\"><strong>\u91d1\u5c5e\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u30e2\u30fc\u30eb\u30c7\u30a3\u30f3\u30b0<\/strong>?- To manufacture small, complex net-shape parts needing high specific strength up to 800\u00a1\u00abC like turbine blades.<\/li>\n<li class=\"whitespace-normal\"><strong>\u7c89\u672b\u51b6\u91d1<\/strong>?- Pressing and sintering to create low-density, high-strength parts like connecting rods.<\/li>\n<\/ul>\n<h2>Specifications of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder is available under various size ranges, shapes and purity levels:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>\u7c92\u5f84:<\/strong>AM\u6cd5\u3067\u306f15\uff5e45\u00d8\u00d7m\u3001\u6eb6\u5c04\u6cd5\u3067\u306f100\u00d8\u00d7m\u307e\u3067\u3002<\/li>\n<li class=\"whitespace-normal\"><strong>\u5f62\u614b\u5b66:<\/strong>?Near-spherical powder morphology provides optimal flow and packing density.<\/li>\n<li class=\"whitespace-normal\"><strong>\u7d14\u7c8b\u6027:<\/strong>?From commercial to high purity levels based on impurity limits and process requirements.<\/li>\n<li class=\"whitespace-normal\"><strong>\u9178\u7d20\u6fc3\u5ea6:<\/strong>\u307b\u3068\u3093\u3069\u306e\u7528\u9014\u30672000ppm\u4ee5\u4e0b\u3092\u7dad\u6301\u3002<\/li>\n<li class=\"whitespace-normal\"><strong>\u6d41\u52d5\u6027:<\/strong>25\u79d2\/50g\u4ee5\u4e0a\u306e\u512a\u308c\u305f\u6d41\u91cf\u7528\u306b\u30ab\u30b9\u30bf\u30de\u30a4\u30ba\u3055\u308c\u305f\u30d1\u30a6\u30c0\u30fc\u3002<\/li>\n<\/ul>\n<h2>Global Suppliers of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Some of the major global suppliers of Ti22Al25Nb powder are:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">AP&amp;C\uff08\u30ab\u30ca\u30c0\uff09<\/li>\n<li class=\"whitespace-normal\">TLS Technik\uff08\u30c9\u30a4\u30c4\uff09<\/li>\n<li class=\"whitespace-normal\">\u30b5\u30f3\u30c9\u30d3\u30c3\u30af\u30aa\u30b9\u30d7\u30ec\u30a4\uff08\u82f1\u56fd\uff09<\/li>\n<li class=\"whitespace-normal\">\u30c6\u30af\u30ca\uff08\u30ab\u30ca\u30c0\uff09<\/li>\n<li class=\"whitespace-normal\">ECKA Granules (Germany)<\/li>\n<li class=\"whitespace-normal\">\u30c1\u30bf\u30f3\u7c89\u672b (\u30ed\u30b7\u30a2)<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">These companies produce various grades of Ti22Al25Nb powder tailored for additive manufacturing, thermal spray, powder metallurgy and other applications.<\/p>\n<h2>Pricing of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder is priced higher than steels and nickel alloys:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\"><strong>\u6570\u91cf<\/strong>500kg\u4ee5\u4e0a\u306e\u5927\u91cf\u6ce8\u6587\u306e\u5834\u5408\u30011kg\u3042\u305f\u308a$100-150\u3002\u5c11\u91cf\u306e\u5834\u5408\u3001\u4fa1\u683c\u306f\u304b\u306a\u308a\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li class=\"whitespace-normal\"><strong>\u54c1\u8cea<\/strong>\u9ad8\u7d14\u5ea6\u306e\u7403\u72b6\u30d1\u30a6\u30c0\u30fc\u306f\u3001\u9ad8\u5ea6\u306a\u30d7\u30ed\u30bb\u30b9\u3092\u7528\u3044\u3066\u53b3\u5bc6\u306b\u7ba1\u7406\u3055\u308c\u305f\u6761\u4ef6\u4e0b\u3067\u88fd\u9020\u3055\u308c\u308b\u305f\u3081\u3001\u30d7\u30ec\u30df\u30a2\u30e0\u4fa1\u683c\u304c\u8981\u6c42\u3055\u308c\u307e\u3059\u3002<\/li>\n<li class=\"whitespace-normal\"><strong>\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc<\/strong>\u5927\u624b\u30b0\u30ed\u30fc\u30d0\u30eb\u30fb\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306f\u3001\u751f\u7523\u91cf\u304c\u591a\u3044\u305f\u3081\u3001\u4e2d\u5c0f\u30e1\u30fc\u30ab\u30fc\u306b\u6bd4\u3079\u3066\u30b3\u30b9\u30c8\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308b\u3002<\/li>\n<li class=\"whitespace-normal\"><strong>\u5730\u7406<\/strong>\u5730\u57df\u306b\u3088\u3063\u3066\u4fa1\u683c\u304c\u7570\u306a\u308a\u3001\u30e8\u30fc\u30ed\u30c3\u30d1\u3084\u5317\u7c73\u306f\u30a2\u30b8\u30a2\u306b\u6bd4\u3079\u3066\u9ad8\u4fa1\u683c\u306e\u5e02\u5834\u3067\u3042\u308b\u3002<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">For critical applications, buyers should focus on quality rather than lowest cost while sourcing Ti22Al25Nb powder.<\/p>\n<h2>Storage and Handling of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb powder requires careful storage and handling:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">Should be stored in sealed containers under inert gas like argon to prevent oxidation<\/li>\n<li class=\"whitespace-normal\">\u7c89\u3058\u3093\u7206\u767a\u306e\u30ea\u30b9\u30af\u3092\u6700\u5c0f\u9650\u306b\u6291\u3048\u308b\u305f\u3081\u306b\u3001\u5fae\u7c89\u672b\u306e\u84c4\u7a4d\u3092\u907f\u3051\u3066\u304f\u3060\u3055\u3044<\/li>\n<li class=\"whitespace-normal\">Use proper PPE, ventilation, grounding and safety practices during powder handling<\/li>\n<li class=\"whitespace-normal\">Prevent contact between powder and ignition sources due to flammability hazard<\/li>\n<li class=\"whitespace-normal\">\u30b5\u30d7\u30e9\u30a4\u30e4\u30fc\u306eSDS\u306e\u9069\u7528\u3055\u308c\u308b\u5b89\u5168\u30ac\u30a4\u30c9\u30e9\u30a4\u30f3\u306b\u5f93\u3063\u3066\u304f\u3060\u3055\u3044<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">Care should be taken when handling this highly reactive alloy powder.<\/p>\n<h2>Inspection and Testing of Ti22Al25Nb Powder<\/h2>\n<p class=\"whitespace-pre-wrap\">Key quality control tests performed on Ti22Al25Nb powder:<\/p>\n<ul class=\"list-disc pl-8 space-y-2\">\n<li class=\"whitespace-normal\">Chemical analysis using ICP-OES or XRF to ensure composition meets specifications<\/li>\n<li class=\"whitespace-normal\">ASTM B822 \u898f\u683c\u6e96\u62e0\u306e\u30ec\u30fc\u30b6\u30fc\u56de\u6298\u3092\u4f7f\u7528\u3057\u3066\u7c92\u5f84\u5206\u5e03\u3092\u6e2c\u5b9a<\/li>\n<li class=\"whitespace-normal\">SEM\u30a4\u30e1\u30fc\u30b8\u30f3\u30b0\u3092\u4f7f\u7528\u3057\u305f\u5f62\u614b\u89e3\u6790<\/li>\n<li class=\"whitespace-normal\">Powder flow rate measurement using Hall flowmeter as per ASTM B213 standard<\/li>\n<li class=\"whitespace-normal\">\u30d8\u30ea\u30a6\u30e0\u30d4\u30af\u30ce\u30e1\u30c8\u30ea\u30fc\u306b\u3088\u308b\u5bc6\u5ea6\u6e2c\u5b9a<\/li>\n<li class=\"whitespace-normal\">Impurity analysis through inert gas fusion or ICP-MS<\/li>\n<li class=\"whitespace-normal\">X\u7dda\u56de\u6298\u306b\u3088\u308b\u5fae\u7d30\u69cb\u9020\u8a55\u4fa1<\/li>\n<\/ul>\n<p class=\"whitespace-pre-wrap\">\u5fb9\u5e95\u3057\u305f\u30c6\u30b9\u30c8\u306b\u3088\u308a\u3001\u7528\u9014\u306b\u5fdc\u3058\u305f\u30d0\u30c3\u30c1\u306e\u4e00\u8cab\u6027\u3068\u30d1\u30a6\u30c0\u30fc\u306e\u54c1\u8cea\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3002<\/p>\n<h2>Comparison Between Ti22Al25Nb and Inconel 718 Powders<\/h2>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb and Inconel 718 powders compared:<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30d1\u30e9\u30e1\u30fc\u30bf<\/th>\n<th>Ti22Al25Nb<\/th>\n<th>\u30a4\u30f3\u30b3\u30cd\u30eb718<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u5bc6\u5ea6<\/td>\n<td>3.7-3.9 g\/cm3<\/td>\n<td>8.2 g\/cm3<\/td>\n<\/tr>\n<tr>\n<td>\u9ad8\u6e29\u5f37\u5ea6<\/td>\n<td>\u540c\u7b49<\/td>\n<td>\u540c\u7b49<\/td>\n<\/tr>\n<tr>\n<td>\u6297\u9178\u5316\u6027<\/td>\n<td>\u3088\u308a\u826f\u3044<\/td>\n<td>\u8abf\u5b50\u304c\u826f\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u5229\u7528\u6599<\/td>\n<td>\u4e0a<\/td>\n<td>\u4e0b\u3052\u308b<\/td>\n<\/tr>\n<tr>\n<td>\u64cd\u4f5c\u6027<\/td>\n<td>\u8ca7\u3057\u3044<\/td>\n<td>\u7d20\u6674\u3089\u3057\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3<\/td>\n<td>\u822a\u7a7a\u5b87\u5b99\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8<\/td>\n<td>\u822a\u7a7a\u5b87\u5b99\u3001\u81ea\u52d5\u8eca<\/td>\n<\/tr>\n<tr>\n<td>\u7a7a\u304d\u72b6\u6cc1<\/td>\n<td>\u4e2d\u7a0b\u5ea6<\/td>\n<td>\u7c21\u5358\u306b\u7528\u610f\u3067\u304d\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>&nbsp;<\/p>\n<p class=\"whitespace-pre-wrap\">Ti22Al25Nb offers weight savings over Inconel 718. But workability is poor and cost is higher for titanium aluminide powder.<\/p>\n<h2>Ti22Al25Nb Powder FAQs<\/h2>\n<p class=\"whitespace-pre-wrap\"><strong>Q: How is Ti22Al25Nb powder produced?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">A: Ti22Al25Nb powder is commercially produced using gas atomization, plasma rotating electrode process, and mechanical alloying followed by annealing and secondary atomization.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Q: What are the main applications of Ti22Al25Nb powder?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">A: The major applications include additive manufacturing, thermal spray coatings, metal injection molding, and powder metallurgy to make lightweight structural parts needing high temperature capability.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Q: What is the typical particle size used in AM?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">A: For most metal AM processes, the ideal Ti22Al25Nb powder size range is 15-45 microns with high purity, spherical morphology and good powder flow.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Q: Does Ti22Al25Nb powder require special handling precautions?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">A: Yes, it is highly reactive and requires careful handling under inert atmosphere using ventilation, grounding, PPE to prevent fire or explosion hazards.<\/p>\n<p class=\"whitespace-pre-wrap\"><strong>Q: Where can I buy Ti22Al25Nb powder for aerospace applications?<\/strong><\/p>\n<p class=\"whitespace-pre-wrap\">A: For aerospace parts needing lightweight and high strength, Ti22Al25Nb powder can be sourced from leading manufacturers including AP&amp;C, TLS Technik, Sandvik Osprey, and Tekna.<\/p>\n<p><\/span><\/span><\/p>","protected":false},"excerpt":{"rendered":"<p>Ti22Al25Nb\u7c89\u672b\u306e\u6982\u8981 Ti22Al25Nb\u306f\u3001\u9ad8\u3044\u6bd4\u5f37\u5ea6\u3001\u826f\u597d\u306a\u8010\u30af\u30ea\u30fc\u30d7\u6027\u3001\u8010\u9178\u5316\u6027\u3001\u6975\u7aef\u306a\u6e29\u5ea6\u306b\u8010\u3048\u308b\u80fd\u529b\u306a\u3069\u306e\u9b45\u529b\u7684\u306a\u7279\u6027\u3092\u6709\u3059\u308b\u30c1\u30bf\u30f3\u30a2\u30eb\u30df\u30ca\u30a4\u30c9\u5408\u91d1\u306e\u30af\u30e9\u30b9\u306b\u5c5e\u3057\u307e\u3059\u3002\u30c1\u30bf\u30f3\u3068\u30a2\u30eb\u30df\u30cb\u30a6\u30e0\u306e\u307b\u307c\u7b49\u539f\u5b50\u6bd4\u306f\u3001\u8efd\u91cf\u3001\u5f37\u5ea6\u3001\u9ad8\u6e29\u3067\u306e\u8010\u74b0\u5883\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u306e\u53d6\u308c\u305f\u7d44\u307f\u5408\u308f\u305b\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002Ti22Al25Nb\u7c89\u672b\u306e\u4e3b\u306a\u7279\u5fb4\u306f\u4ee5\u4e0b\u306e\u901a\u308a\uff1a\u975e\u5e38\u306b\u9ad8\u3044\u6bd4\u5f37\u5ea6\uff08\u5f37\u5ea6\u5bfe\u91cd\u91cf\u6bd4\uff09 \u512a\u308c\u305f\u9ad8\u6e29\u6a5f\u68b0\u7279\u6027 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