Research of Mo Powder’s Densification during Sintering

Abstract:

Mo powder was pressed into rods by cold isostatic pressing and sintered by multi-function furnace. Physical and chemical properties of sintering samples at different temperature were tested such as chemical elements, density, area shrinkage ratio and fracture surface morphology. Through the investigation we can draw the conclusions as following: Mo powder softens at 1353K. The temperature of beginning metallization is 1833K. In the range of 1713K~1953K, impurity contents such as C and O drop down fast and density increases sharply. When sintering temperature rises from 1833K to 1953K, the grains of sintering rods are fine. When the sintering temperature surpasses 2073K, the grains grow up very fast. The sintering shrinkage ratio enlarges quickly.

• Periodical: Advanced Materials Research (Volumes 399-401)
• Pages: 103-108
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.399-401.103
• Online since: November 2011
• Authors: Ren Zhi Liu, Kuai She Wang, Yuan Jun Sun
• Keywords: Densification, Grain Boundary, Mo Powder, Sinter

References

[1] Zhong Lv, Yinghua Xing. China Molybdenum (In Chinese) [J], Vol. 1(1990), p.35

[2] Liye Song, Bin Yang，Rare Metal Material and Engineering (In Chinese) [J], Vol. 1(1989), p.31

[3] Mingzhu Shi，Rare Metal Material and Engineering (In Chinese) [J], Vol. 21(1992), p.46

[4] Qingshan Wei，China Molybdenum (In Chinese) [J], Vol. 3(1992), p.12

[5] Huifang Wang, Shaoheng Zhang，Powder Metallurgy Technology (In Chinese) [J], Vol, 12(1994), p.103

[6] D. Shanmugasundaram, R. Chandramouli, Materials and Design [J], Vol.30 (2009), p.3444

[7] D. Doni Jayaseelan, D. Amutha Rani, T. Nishikawa, Journal of the European Ceramic Society [J], Vol. 22 (2002), p.1113