X-energy\u793e\u306e\u30b3\u30f3\u30c6\u30ca\u30b5\u30a4\u30ba\u306e\u539f\u5b50\u529b\u767a\u96fb\u6240\u306e\u71c3\u6599\u4ea4\u63db\u306f\u3069\u3046\u3059\u308b\u306e\u304b\u6c17\u306b\u306a\u308a\u307e\u3057\u305f\u30023\u5e74\u304b\u308960\u5e74\u3067\u4ea4\u63db\u3060\u305d\u3046\u3067\u3059\u3002\u539f\u5b50\u7089\u81ea\u4f53\u306e\u5bff\u547d\u3082\u3042\u308b\u306e\u3067\u300160\u5e74\u306e\u5834\u5408\u306f\u5de5\u5834\u306b\u5168\u90e8\u6301\u3061\u5e30\u3063\u3066\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3068\u71c3\u6599\u4ea4\u63db\u3092\u3059\u308b\u306e\u304c\u697d\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002
\n\u901a\u5e38\u306e\u539f\u5b50\u7089\u306f\uff11\uff5e3\u5e74\u6bce\u306b\u4e00\u90e8\u3092\u4ea4\u63db\u3059\u308b\u3088\u3046\u3067\u3059\u3002\u53e4\u3044\u71c3\u6599\u68d2\u306e\u53d6\u308a\u51fa\u3057\u3068\u4ea4\u63db\u306f\u653e\u5c04\u80fd\u306e\u305f\u3081\u4eba\u529b\u3067\u306f\u3067\u304d\u305a\u3001\u6a5f\u68b0\u5f0f\u306e\u30af\u30ec\u30fc\u30f3\u3092\u4f7f\u3046\u306e\u3060\u3068\u601d\u3044\u307e\u3059\u3002
\n\u901a\u5e38\u306e\u539f\u5b50\u7089\u306e\u6838\u71c3\u6599\u306f\u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u5408\u91d1\u3067\u88ab\u8986\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u306f\u4e2d\u6027\u5b50\u306e\u5438\u53ce\u304c\u5c11\u306a\u3044\u305f\u3081\u6838\u53cd\u5fdc\u3092\u59a8\u3052\u306a\u3044\u3053\u3068\u306e\u307b\u304b\u306b\u3001\u653e\u5c04\u5316\uff08\u4e2d\u6027\u5b50\u3092\u5438\u3063\u3066\u8cea\u91cf\u6570\u304c1\u591a\u3044\u4ed6\u306e\u539f\u5b50\u6838\u306b\u5909\u5316\u3057\u3001\u305d\u308c\u304c\u653e\u5c04\u80fd\u3092\u793a\u3059\uff09\u3092\u3057\u306b\u304f\u3044\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u305d\u3046\u3044\u3046\u3053\u3068\u3067\u3057\u305f\u3089X-energy\u306eTRISO-X\u71c3\u6599\uff08\u305f\u3069\u3093\uff09\u3082\u88ab\u8986\u306f\u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u9ad8\u6e29\u3067\u9178\u7d20\u306b\u89e6\u308c\u308b\u3068\u71c3\u3048\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u71c3\u6599\u68d2\u306e\u88ab\u8986\u306f\u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u81ea\u8eab\u306e\u9178\u5316\u7269\u3084\u4e8c\u9178\u5316\u30c1\u30bf\u30f3\u3067\u30b3\u30fc\u30c6\u30a3\u30f3\u30b0\u3057\u3066\u3044\u308b\u305d\u3046\u3067\u3059\u3002\u9762\u767d\u3044\u306e\u306f\u3059\u3050\u4e0b\u306e\u5143\u7d20\u3067\u3042\u308b\u30cf\u30d5\u30cb\u30a6\u30e0\u306f\u4e2d\u6027\u5b50\u3092\u5438\u53ce\u3059\u308b\u305f\u3081\u3001\u9664\u53bb\u304c\u5fc5\u8981\u3060\u305d\u3046\u3067\u3059\u30022\u7a2e\u306e\u91d1\u5c5e\u306e\u30c1\u30aa\u30b7\u30a2\u30f3\u9178\u5869\u306e\u30e1\u30c1\u30eb\u30a4\u30bd\u30d6\u30c1\u30eb\u30b1\u30c8\u30f3\u3078\u306e\u6eb6\u89e3\u5ea6\u306e\u5dee\u3092\u5229\u7528\u3057\u3066\u5206\u5225\u6676\u6790\u3059\u308b\u65b9\u6cd5\u304c\u3064\u304b\u308f\u308c\u308b\u3068\u306e\u3053\u3068\u3067\u3001\u3053\u3093\u306a\u65b9\u6cd5\u3092\u3088\u304f\u898b\u3064\u3051\u305f\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u6838\u878d\u5408\u7089\u306e\u5834\u5408\u3082\u78c1\u5834\u3067\u30d7\u30e9\u30ba\u30de\u306f\u9589\u3058\u8fbc\u3081\u307e\u3059\u304c\u3001\u4e2d\u6027\u5b50\u306f\u78c1\u5834\u3067\u306f\u9589\u3058\u8fbc\u3081\u3089\u308c\u306a\u3044\u306e\u3067\u5bb9\u5668\u306e\u58c1\u306b\u5f53\u305f\u308a\u307e\u3059\u3002\u653e\u5c04\u5316\u3057\u306b\u304f\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u3092\u4f7f\u3046\u306e\u304b\u306a\uff1f\u3068\u601d\u3063\u3066\u307f\u305f\u3089\u305d\u3046\u3044\u3046\u7814\u7a76\u3082\u3042\u308b\u3088\u3046\u3067\u3059\u3002Zr\u306e\u6c34\u7d20\u5316\u7269\u3092\u4f7f\u3046\u305d\u3046\u3067\u3059\u3002\u3053\u308c\u306f\u3053\u308c\u3067\u6c34\u3068\u53cd\u5fdc\u3057\u305f\u308a\u3057\u305d\u3046\u306a\u306e\u3067\uff08\u6c34\u7d20\u7206\u767a\uff09\u3001\u505c\u6b62\u3057\u3066\u30e1\u30f3\u30c6\u30ca\u30f3\u30b9\u3059\u308b\u3068\u304d\u306b\u8981\u6ce8\u610f\u3067\u3059\u3002
\nhttps:\/\/www.nifs.ac.jp\/report\/annrep13\/pdf\/360.pdf
\n\u539f\u5b50\u529b\u6f5c\u6c34\u8266\u306f\u3069\u3046\u304b\u3068\u601d\u3063\u3066\u8abf\u3079\u305f\u3089\u3001\u8239\u306e\u5bff\u547d\u306e\u65b9\u304c\u71c3\u6599\u306e\u5bff\u547d\u3088\u308a\u77ed\u3044\u306e\u3067\u4ea4\u63db\u4e0d\u8981\u3060\u305d\u3046\u3067\u3059\u3002\u3055\u3059\u304c\u534a\u6e1b\u671f7\u5104\u5e74(235U)\u3067\u3059\u306d\u3002\u71c3\u6599\u88dc\u7d66\u306e\u305f\u3081\u306b\u6d6e\u4e0a\u3059\u308b\u5fc5\u8981\u304c\u306a\u3044\u3068\u3044\u3046\u306e\u306f\u6050\u308b\u3079\u304d\u3053\u3068\u3067\u3059\u3002\u4e57\u7d44\u54e1\u306e\u98df\u6599\u88dc\u7d66\u306e\u305f\u3081\u306b\u6d6e\u4e0a\u306f\u5fc5\u8981\u3067\u3057\u3087\u3046\u304c\u3001\u30c9\u30ed\u30fc\u30f3\u306e\u3088\u3046\u306b\u9060\u9694\u30fb\u81ea\u52d5\u5316\u3055\u308c\u305f\u3089\u4f55\u5e74\u3082\u6d6e\u4e0a\u305b\u305a\u306b\u52d5\u304d\u56de\u308c\u308b\u306e\u3067\u8105\u5a01\u3067\u3059\u3002
\nhttps:\/\/world-nuclear.org\/information-library\/non-power-nuclear-applications\/transport\/nuclear-powered-ships
\n\u5175\u5668\u3092\u5fc5\u8981\u3068\u3057\u306a\u3044\u6642\u4ee3\u304c\u6765\u3066\u307b\u3057\u3044\u3067\u3059\u3002\u91d1\u6301\u3061\u55a7\u5629\u305b\u305a\u3067\u3001\u30a8\u30cd\u30eb\u30ae\u30fc\u3068\u98df\u6599\u304c\u6f64\u6ca2\u306b\u306a\u308c\u3070\u304b\u306a\u308a\u306e\u554f\u984c\u306f\u89e3\u6c7a\u3059\u308b\u3068\u4fe1\u3058\u3066\u3044\u307e\u3059\u304c\u2026\u3000\u6700\u8fd1\u306f\u305d\u3046\u3067\u3082\u306a\u3044\u3088\u3046\u306b\u898b\u3048\u308b\u72b6\u6cc1\u304c\u8d77\u3053\u3063\u3066\u3044\u308b\u306e\u304c\u60b2\u3057\u3044\u3067\u3059\u3002<\/p>\n
\u82f1\u8a9e\u306f\u3000https:\/\/en.wikipedia.org\/wiki\/Zirconium_alloys<\/p>\n
“A typical composition of nuclear-grade zirconium alloys is more than 95 weight percent zirconium and less than 2% of tin, niobium, iron, chromium, nickel and other metals, which are added to improve mechanical properties and corrosion resistance.”
\ntin \u30b9\u30ba\u300050\u756a\u5143\u7d20
\nzirconium \u30b8\u30eb\u30b3\u30cb\u30a6\u30e0\u300040\u756a\u5143\u7d20
\ncorrosion resistance \u8150\u98df\u8010\u6027<\/p>\n
“Furthermore, oxidative reaction of zirconium with water releases hydrogen gas, which partly diffuses into the alloy and forms zirconium hydrides. The hydrides are less dense and are weaker mechanically than the alloy; their formation results in blistering and cracking of the cladding \u2013 a phenomenon known as hydrogen embrittlement.”
\nblistering\u3000\u713c\u3051\u3064\u304f\u3088\u3046\u306a\u3001\u8f9b\u8fa3\u306a\u3000\u3068\u3044\u3046\u610f\u5473\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306fhydrogen blistering \u3067\u6c34\u7d20\u306e\u6ce1\u304c\u91d1\u5c5e\u4e2d\u306b\u3067\u304d\u3066\u7a7a\u6d1e\u3084\u7a74\u304c\u3067\u304d\u308b\u3053\u3068\u3002
\nhydrogen embrittlement \u6c34\u7d20\u8106\u5316<\/p>\n
“Commercial non-nuclear grade zirconium typically contains 1\u20135% of hafnium, whose neutron absorption cross-section is 600 times that of zirconium. Hafnium must therefore be almost entirely removed (reduced to < 0.02% of the alloy) for reactor applications.”
\nhafnium \u30cf\u30d5\u30cb\u30a6\u30e0\u300072\u756a\u5143\u7d20<\/p>\n
\u201dNuclear-grade zirconium alloys contain more than 95% Zr, and therefore most of their properties are similar to those of pure zirconium. The absorption cross section for thermal neutrons is 0.18 barn for zirconium, which is much lower than that for such common metals as iron (2.4 barn) and nickel (4.5 barn).\u201d
\nbarn \u53cd\u5fdc\u306e\u65ad\u9762\u7a4d\uff08\uff11\u3064\u306e\u7c92\u5b50\u304c\u885d\u7a81\u3057\u305f\u6642\u306e\u53cd\u5fdc\u78ba\u7387\u3092\u6709\u52b9\u9762\u7a4d\u3068\u3057\u3066\u8003\u3048\u308b\uff09\u306e\u5358\u4f4d\u30021\u30d0\u30fc\u30f3\uff1d10^-28 m2\u3002\u30a6\u30e9\u30f3\u306e\u539f\u5b50\u6838\u306e\u65ad\u9762\u7a4d\u304c\u307b\u307c1\u30d0\u30fc\u30f3\u3002\u5143\u306e\u610f\u5473\u306f\u7d0d\u5c4b\u3067\u3001Oppenheimer\u3084Bethe\u306a\u3069\u3053\u306e\u5206\u91ce\u306e\u6709\u540d\u4eba\u306e\u540d\u524d\u304c\u5358\u4f4d\u3068\u3057\u3066\u306f\u4f7f\u3044\u306b\u304f\u304b\u3063\u305f\u305f\u3081\u3001 The unit was “really as big as a barn”\u3068\u3057\u3066\u5b9a\u7740\u3057\u305f\u3002
\nhttps:\/\/en.wikipedia.org\/wiki\/Barn_(unit)<\/p>\n","protected":false},"excerpt":{"rendered":"
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