Synthesis and oxidation resistance of MoAlB single crystals. Issue 2 (1st February 2019)

• Record Type: Journal Article
• Authors: Shi, Ouling; Xu, Ludi; Jiang, Anna; Xu, Qiang; Xiao, Youtao; Zhu, Degui; Grasso, Salvatore; Hu, Chunfeng
• Is Part Of: Ceramics international. Volume 45:Issue 2(2019)Part A
• Page Start: 2446
• Page End: 2450
• Publication Date: 2019-02-01
• Subjects: MoAlB -- Synthesis -- Single crystal -- Oxidation resistance; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2018.10.170
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: Needle and plate like single MoAlB crystals were synthesized by reacting MoB and Al powders. The growth of MoAlB single crystals was promoted by either increasing dwell temperature or by adding excess of Al. When raising the temperature from 1100 to 1300 °C, the shape of MoAlB single crystals transformed from needle to plate like. The single crystals exhibited anisotropic oxidation resistance where the (0 l 0) plane showed a better oxidation resistance compared to ( l 00) and (00 l ) planes. The oxidization weight gain tested at 1100 °C and weight loss at 1300 °C suggests the beneficial role of a dense Al2 O3 scale formed on the plate-like single crystals.