HEAT-RESISTANT SINTERING MATERIAL HAVING EXCELLENT HIGH-TEMPERATURE WEAR RESISTANCE AND SALT DAMAGE RESISTANCE, AND METHOD FOR PRODUCING THE SAME

• Main Authors: MIYAHARA MASAHISA, FUKUDA RYOSUKE
• Format: Patent
• Language: English; Japanese
• Published: 22.11.2018
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; TREATMENT OF ALLOYS OR NON-FERROUS METALS

PROBLEM TO BE SOLVED: To provide a heat-resistant sintering material that has excellent oxidation resistance, and is excellent in both of wear resistance and salt damage resistance, and a method for producing the same.SOLUTION: A heat-resistant sintering material having excellent high-temperature wear resistance and salt damage resistance has a structure having a hard phase dispersed in a host phase, and has a composition comprising, in mass%, Cr: 15-30%, Ni: 8-30%, Si: 2.0-6.0%, C: 0.5-2.5%, with the balance being Fe and unavoidable impurities as the total composition, wherein, the host phase comprises Fe-Cr-Ni-Si, the hard phase comprises Fe-Cr-C, and the porosity is 2.0% or less.SELECTED DRAWING: Figure 1 【課題】本発明は耐酸化性に優れ、耐摩耗性と耐塩害性の両方に優れる耐熱焼結材とその製造方法の提供を課題とする。【解決手段】本発明に係る高温耐摩耗性、耐塩害性に優れた耐熱焼結材は、母相中に硬質相が分散された組織を有し、全体組成が質量％でＣｒ：１５〜３０％、Ｎｉ：８〜３０％、Ｓｉ：２．０〜６．０％、Ｃ：０．５〜２．５％、残部がＦｅおよび不可避不純物からなる組成を有し、前記母相がＦｅ−Ｃｒ−Ｎｉ−Ｓｉからなり、前記硬質相がＦｅ−Ｃｒ−Ｃからなり、気孔率が２．０％以下であることを特徴とする。【選択図】図１