http://blog.nightly.dedyn.io/tags/%E9%AB%98%E6%B8%A9%E6%9D%90%E6%96%99/Recent content in 高温材料 on Daily SignalHugo -- gohugo.ioja-JP© 2026 Daily SignalMon, 23 Feb 2026 15:00:00 +0900http://blog.nightly.dedyn.io/daily/2026-02-23-ni-superalloy-re-substitution/Mon, 23 Feb 2026 15:00:00 +0900http://blog.nightly.dedyn.io/daily/2026-02-23-ni-superalloy-re-substitution/<h2 class="relative group">📋 要約 <div id="-要約" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#-%e8%a6%81%e7%b4%84" aria-label="アンカー">#</a> </span> </h2> <ul> <li>🔑 <strong>Re代替の必要性</strong>: 供給リスク（ロシア・カザフスタン依存）+ コスト（$3,000-5,000/kg）</li> <li>🔑 <strong>Ru添加の効果</strong>: 第4世代でRu添加によりRe低減（6wt%→3wt%）とγ/γ′安定性向上</li> <li>🔑 <strong>TCP相制御</strong>: Ruによる位相安定化、Re・Ruの相互拡散抑制</li> <li>🔑 <strong>環境劣化</strong>: TMC（Topologically Close-Packed）相析出による表面脆化</li> </ul> <hr> <h2 class="relative group">🎯 背景：Re依存の構造的課題 <div id="-背景re依存の構造的課題" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#-%e8%83%8c%e6%99%afre%e4%be%9d%e5%ad%98%e3%81%ae%e6%a7%8b%e9%80%a0%e7%9a%84%e8%aa%b2%e9%a1%8c" aria-label="アンカー">#</a> </span> </h2> <h3 class="relative group">第2/3世代SXのRe含有量 <div id="第23世代sxのre含有量" class="anchor"></div> <span class="absolute top-0 w-6 transition-opacity opacity-0 -start-6 not-prose group-hover:opacity-100 select-none"> <a class="text-primary-300 dark:text-neutral-700 !no-underline" href="#%e7%ac%ac23%e4%b8%96%e4%bb%a3sx%e3%81%aere%e5%90%ab%e6%9c%89%e9%87%8f" aria-label="アンカー">#</a> </span> </h3> <table> <thead> <tr> <th style="text-align: left">世代</th> <th style="text-align: left">合金名</th> <th style="text-align: left">Re (wt%)</th> <th style="text-align: left">Ru (wt%)</th> <th style="text-align: left">T_1000h@1100°C</th> </tr> </thead> <tbody> <tr> <td style="text-align: left">2nd</td> <td style="text-align: left">CMSX-4</td> <td style="text-align: left">3</td> <td style="text-align: left">0</td> <td style="text-align: left">60 MPa</td> </tr> <tr> <td style="text-align: left">3rd</td> <td style="text-align: left">CMSX-10</td> <td style="text-align: left">6</td> <td style="text-align: left">0</td> <td style="text-align: left">70 MPa</td> </tr> <tr> <td style="text-align: left">4th</td> <td style="text-align: left">TMS-138</td> <td style="text-align: left">5</td> <td style="text-align: left">2</td> <td style="text-align: left">80 MPa</td> </tr> <tr> <td style="text-align: left">5th</td> <td style="text-align: left">TMS-173</td> <td style="text-align: left">3</td> <td style="text-align: left">5</td> <td style="text-align: left">85 MPa</td> </tr> </tbody> </table> <p><strong>Reの役割:</strong></p>