Solid sintering

...However, when the powder contains two or more components, if the melting point of the component with the smaller amount is lower than that of the component with the larger amount, and the heating temperature is set to an intermediate value between the two, the component with the smaller amount will melt and become liquid. The densification phenomenon that occurs in this case is specifically called "liquid sintering" or "liquid sintering." And when sintering occurs when all the components are in a solid state, it is called "solid sintering," and the two are distinguished.
[Solid-state sintering]
The mechanism of solid-phase sintering is generally considered to be as follows:

*Some of the terminology that refers to "solid sintering" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ただし粉末の成分が2種またはそれ以上の場合，量が少ないほうの成分の融点が，量の多いほうの成分のそれよりも低いときには加熱温度を両者の中間の値とすると，少ないほうの成分は融解して液相となるが，この場合に生じる緻密化現象はとくに〈液相存在下の焼結〉または〈液相焼結liquid sintering〉と呼ぶ。そして，全成分がすべて固相状態で起こる焼結を〈固相焼結solid sintering〉と呼び，両者を区別している。
［固相焼結］
　固相焼結の機構は一般に以下のように考えられている。…

※「solid sintering」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報