Preparation of YAM Coating on the ZrB2 Composites Ceramics by Co-Precipitation Process

Shi Bin Li; Hong Ying Ru; Jie Guang Song; Xiao Bo Bai

doi:10.4028/www.scientific.net/AMR.1058.261

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1058Preparation of YAM Coating on the ZrB2 Composites...

Preparation of YAM Coating on the ZrB₂ Composites Ceramics by Co-Precipitation Process

Abstract:

. Zirconium diboride (ZrB₂) acts as an ultra-high-temperature ceramics, and are applied in over 2000°C environment. With the characterization of strong covalent bonding structure and high melting point, it is difficult to realize sintering. For achieving composites system densification, the transition metals with good wettability and other matching properties, or the second phases ceramics were added as sintering aids, but the bulk materials' application temperature limit and ablating rate resistance were reduced by sintering aids. Among the A1₂O₃-Y₂O₃ binary phase system, YAM(Y₄A1₂O₉) has the highest melting point, chemical and physical compatibility is matched with ZrB₂ composites. The YAM coating was prepared on bulk materials surface by co-precipitation routine, the effects of precursor volume fractions and calcining process on coating phases were investigated, and the coating morphology and interface bonding were observed. The aim is to obtain the best protective coating constituents and technology parameters.

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Periodical:

Advanced Materials Research (Volume 1058)

Pages:

261-264

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1058.261

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Online since:

November 2014

Authors:

Shi Bin Li*, Hong Ying Ru, Jie Guang Song, Xiao Bo Bai

Keywords:

Coating, Co-Precipitation Process, YAM, ZrB₂

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* - Corresponding Author

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