CAJ | 학술논문

为提高材料表面的耐磨性，利用固体粉末法，以煤矸石为主渗剂，铝粉和镁粉为还原剂，在Q235钢表面制备渗硅层。煤矸石渗硅层中有Fe3Si、Al2SiFe等新相生成；渗硅层主要由含Si的α固溶体组成，厚度可达100μm；渗硅层硬度达348.7 HV0.1，基体为134.5 HV0.1；磨粒磨损性能测试结果表明，渗硅层在0#、01#和02#金相砂纸下耐磨性较基体分别提高2.79倍、2.37倍和2.03倍；在20 N、40 N和70 N的附加载荷下耐磨性分别提高2.03倍、2.18倍和2.82倍；渗硅层在低速（60 r/min）和高速（120 r/min）下耐磨性分别提高2.02倍和2.53倍。煤矸石渗硅具有可行性，能够提高低碳钢表面综合性能。
위제고재료표면적내마성，이용고체분말법，이매안석위주삼제，려분화미분위환원제，재Q235강표면제비삼규층。매안석삼규층중유Fe3Si、Al2SiFe등신상생성；삼규층주요유함Si적α고용체조성，후도가체100μm；삼규층경도체348.7 HV0.1，기체위134.5 HV0.1；마립마손성능측시결과표명，삼규층재0#、01#화02#금상사지하내마성교기체분별제고2.79배、2.37배화2.03배；재20 N、40 N화70 N적부가재하하내마성분별제고2.03배、2.18배화2.82배；삼규층재저속（60 r/min）화고속（120 r/min）하내마성분별제고2.02배화2.53배。매안석삼규구유가행성，능구제고저탄강표면종합성능。
Q235 steel is siliconized by using the method of solid power while gangue is taken as the main agent, pure Al and Mg power as reducing agent Fe3Si,Al2SiFe and other new phase are produced in layer which is made up with α phase. The thickness of layer is about 100μm. Micro hardness of layer is 348.7HV0.1, the base is only 134.5HV0.1. The result of abrasive wear resistance indicates that: when samples wear on the # 0, #01 and #02 metallographic sandpaper, the wear resistance of silicon inifltration layer increase 2.79 times, 2.37 times and 2.03 times compared with the base; when samples wear under 20N, 40N and 70N additional load, the wear resistance increase 2.03 times, 2.18 times and 2.82 times; when samples wear at low speed (60 r/min) and high speed (120 r/min), the wear resistance increase 2.02 times and 2.53 times. Coal gangue siliconizing is feasible, it can improve the comprehensive properties of low carbon steel surface.