热压烧结工艺对金刚石陶瓷磨边轮胎体性能的影响
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摘要
本工作研究了分段式和抛物线式两种通用热压烧结工艺对金刚石陶瓷磨边轮胎体性能的影响。结果表明,分段式热压烧结工艺制备的胎体密度和硬度高于抛物线式热压烧结工艺制备的胎体,但采用后者工艺制备的胎体强度较前者工艺提高约12%。采用分段式工艺烧结过程中镍、锰、锡与铜形成固溶体,并与骨架相的铁元素互扩散,在胎体中生成枝状富铁相,提高了胎体的合金化程度和致密度,胎体断口较平整,存在解理断裂和沿晶断裂。抛物线式热压烧结工艺胎体中生成较多铜基固溶体,少量铜和镍、锰扩散进入片状富铁相中,通过固溶强化和弥散强化作用提高了胎体强度,胎体断口呈粗糙剥离态。
The matrix of diamond ceramic grinding tool was researched in this paper,effect of two common hot pressing process segmented and parabolic type on the performance of the segment of the matrix were studied through a series of experiments and analysis.The results show that the density and hardness of the matrix using the segmented type hot pressing process are relatively higher than parabolic pressing process,but the bending strength of the matrix utilizing the latter process increase from about 12%.The solid solution which was composed of tin-nickel-manganese with copper is formed during the segmented sintering process,and the solid solution diffuse completely into the skeleton-like iron element which improve degree of alloying and density.The fracture of the matrix was smooth and there has cleavage fracture and intergranular fracture.A certain number of dendritic iron-rich phases generated in the parabolic hot pressing carcass,large amounts of copper solid solution phases formed in the matrix during process and a small amount ofαsolid solution of copper diffuse into the sheet-like iron-rich phase,matrix strength by solid solution strengthening and dispersion strengthening effect is improved.The matrix fracture was a rough peeling state.
The matrix of diamond ceramic grinding tool was researched in this paper,effect of two common hot pressing process segmented and parabolic type on the performance of the segment of the matrix were studied through a series of experiments and analysis.The results show that the density and hardness of the matrix using the segmented type hot pressing process are relatively higher than parabolic pressing process,but the bending strength of the matrix utilizing the latter process increase from about 12%.The solid solution which was composed of tin-nickel-manganese with copper is formed during the segmented sintering process,and the solid solution diffuse completely into the skeleton-like iron element which improve degree of alloying and density.The fracture of the matrix was smooth and there has cleavage fracture and intergranular fracture.A certain number of dendritic iron-rich phases generated in the parabolic hot pressing carcass,large amounts of copper solid solution phases formed in the matrix during process and a small amount ofαsolid solution of copper diffuse into the sheet-like iron-rich phase,matrix strength by solid solution strengthening and dispersion strengthening effect is improved.The matrix fracture was a rough peeling state.
引文
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2 Loginov P,Mishnaevsky Jr L,Levashov E,et al.Materials&Design,2015,88,310.
3 马成新,史小华.超硬材料工程,2015,27(5),45.
4 王春芳.预合金粉在金刚石锯片中的应用.硕士学位论文,河北工业大学,2004.
5 成云平,王成勇,袁慧,等.金刚石与磨料磨具工程,2005,8(3),45.
6 成云平.陶瓷抛光砖磨削加工及其金刚石工具的研究.硕士学位论文,广西大学,2005.
7 Borowieckajamrozek J,Lachowski J.Procedia Engineering,2017,25(177),289.
8 储志强,郭学益,刘东华.金属材料与冶金工程,2016,5(5),8.
9 Zhou X,Wang M,Zhao H.Jorunal of Alloys and Compounds,2015,665(25),100.
10 Dhokey B,Utpat K,Gosavi A,et al.International Journal of Refractory Metals&Hard Materials,2013,36(1),289.
11 Sun Y X,Tsai Y T,Lin K H.Materials&Design,2015,15(80),89.
12 韩培伟,储少军,梅平,等.锰铁合金氧化物夹杂及其对洁净钢质量的影响.第十七届全国炼钢学术会议论文集.杭州,2013,6.
13 Narayanan T S N S,Park Y W,Kang Y L.Wear,2007,262(1-2),228.
14 徐诗鸣,付耀先,付维爱,等.低温物理,1984(2),149.
15 黄培云.粉末冶金原理.北京:冶金工业出版社,1998.
16 Kobayashi M.International Journal of Solids and Strucures,2017,30(6),54.
17 孙莹,于庆波.昆明理工大学学报,2011(8),18.
18 李贺,尹海清,易善杰,等.工程科学学报,2015,(37)5,621.