Developmental Research of New-Ceramics and Metal Composite Wear Resistant Materials

Research Project

Project/Area Number	59850114
Research Category	Grant-in-Aid for Developmental Scientific Research
Allocation Type	Single-year Grants
Research Field	金属加工(含鋳造)
Research Institution	KURUME COLLEGE OF TECHNOLOGY
Principal Investigator	MATSUBARA Y. Professor, Metallurgical Engineering Kurume College of Technology, その他, 教授 (20044258)
Co-Investigator(Kenkyū-buntansha)	本田義興久留米工業高等専門学校, 金属工学科, 助手 (10044281) 伊藤普久留米工業高等専門学校, 金属工学科, 教授 (10151531) KOHIRA K. Professor, Metallurgical Engineering Kurume College of Technology, 金属工学科, 教授 (90178351) HONDA Y. Assistant, Metallurgical Engineering Kurume College of Technology ITO H. Professor, Metallurgical Engineering Kurume College of Technology
Project Period (FY)	1984 – 1986
Project Status	Completed (Fiscal Year 1986)
Budget Amount *help	¥3,200,000 (Direct Cost: ¥3,200,000) Fiscal Year 1986: ¥900,000 (Direct Cost: ¥900,000) Fiscal Year 1985: ¥1,100,000 (Direct Cost: ¥1,100,000) Fiscal Year 1984: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords	New Ceramic / Composite / 耐摩耗材料
Research Abstract	THE PURPOSE OF THIS STUDY WAS TO ESTABLISH THE TECHNIQUES OF BONDING THE NEW CERAMICS AND IRON BASE ALLOYS AND THEN TO DEVELOP THEIR COMPOSITE MATERIALS FOR ABRASION WEAR RESISTANCE. THE RESULTS CLARIFIED FROM THIS INVESTIGATION ARE AS FOLLOWS: (1) WC BASE CERMETS WERE CAST-BONDED BY THE MELTS OF Fe-C ALLOY AND Fe-Cr-C ALLOY CONTAINING UP TO 15%Cr. IN 27%Cr ALLOY, HOWEVER, THE BONDING CONDITION WAS LOWERED BECAUSE OF <Cr_2> <O_3> FILM FORMED ON THE SURFACE OF THE MELT. Ni-P ALLOY PLATING ON THE CERMET IMPROVED EFFECTIVELY THE WETTABILITY OF THE Fe-Cr-C ALLOY MELT WITH HIGHER CHROMIUM CONTENT. BONDING CONDITION OF TiC BASE CERMET AND Fe-C ALLOY WAS FAIRLY GOOD BECAUSE OF Mo AND Ni IN THE CERMET. (2) SKELTONS OF WC BASE AND TiC BASE CERMETS COULD BE INFILTRATED BY HIGH CHROMIUM CAST IRON AND FURTHERMORE THEY WERE SUCCESSFULLY CAST-BONDED BY Fe-27%Cr-C ALLOY TO MANUFACTURE THEIR COMPOSITE MATERIALS. (3) COMPOSITE MATERIALS OF CrB CERAMIC BASE COATING AND STEEL WERE MANUFACTURED BY THE PLASMA SPRAYING AND THEIR BONDING WAS CAUSED BY FORMING THE ALLOYED PHASE BETWEEN THEM. THE ALLOYED PHASE AND THE STRUCTURE OF COATING WERE CHANGED BY THE CONDITIONS OF HEAT TREATMENT. (4) THE COMBINATIONS OF VC AND <Cr_3> <C_2> CERAMICS AND Fe-Cr-Ni ALLOY MELT, AND THOSE OF NbC, WC AND VC CERAMICS AND Fe-Cr-C ALLOY MELT WITH HIGHER CARBON CONTENT WERE GOOD FOR THE PRODUCTION OF COMPOSITE MATERIALS BY COMPO-CASTING TECHNIQUE. THE WEAR RESISTANCE OF THE MATERIALS OF THE SEVERAL FINE CERAMICS AND Fe-27%Cr-3.6C ALLOY SHOWED FOUR TO FIVE TIMES AS LARGE AS THAT OF 27%Cr EUTECTIC CAST IRON.