The acidic ammonothermal method is a key technological route for the large-scale production of large-size, high-quality gallium nitride single crystals. The extreme service conditions impose exceptionally stringent demands on the design and manufacturing of the high-temperature and ultra-high pressure reactors used for growing gallium nitride crystals. In this paper, the design requirements for the high-temperature and ultra-high pressure reactors are introduced firstly, and the potential failure modes are identified. Then, the key design and manufacturing technologies are elaborated, including strength design of high-temperature and ultra-high pressure reactors, high-temperature and ultra-high pressure sealing, development of special-shaped cylinder forging made of high-strength and high-toughness nickel based superalloys, diffusion bonding by hot isostatic pressing, as well as the inspection and the in-service performance of the reactors. Finally, relevant research recommendations are proposed for the development of larger diameter reactors.
CHEN Xuedong
,
ZHOU Yu
,
YAO Zuoquan
,
WANG Bing
,
FAN Haijun
,
NIU Zheng
,
WANG Yuxuan
,
CHENG Jingwei
,
XU Shuangqing
,
MENG Gang
,
QIAO Kun
. Design and Manufacturing of High Temperature and Ultra High Pressure Reactor for Growing Gallium Nitride Single Crystal[J]. Journal of Special Equipment, 2026
, 1(1)
: 3
-8
.
DOI: 10.27022/j.issn2097-7697.2026.01.001
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