The bond isn't added.
It grows through.
结合相不是加进去的，
是长进去的。
Endogenous
Silicon powder fired under nitrogen turns into β-Si₃N₄ whiskers that grow between the silicon carbide grains and lock them. Not a glue between particles — a second ceramic phase woven into the first. 硅粉在氮气中反应，生成 β-氮化硅晶须，从碳化硅颗粒之间长出来，把骨料锁死。它不是颗粒之间的粘结剂，而是长进第一相里的第二相陶瓷。
A company can be read the same way as its material.这家企业，可以照着它的材料来读。
Endogenous — grown from withinGrown in place, not stuck on原位生长，不是外来粘合
A conventional bond is a binder poured between grains. Nitriding is different: the silicon is already in the mix, and under nitrogen it becomes needle-like crystals that push out through the gaps and interlock. The strength is not at the joints. There are no joints. 常规的结合方式，是把粘结剂灌进颗粒之间。氮化不一样：硅本来就在配料里，在氮气中变成针状晶体，从缝隙里顶出来，彼此咬合。强度不在接缝上——因为根本没有接缝。
The same, one scale up放大一级，是同一件事
The 2009 process was not licensed in. It came out of more than a year of trials with university and institute researchers, and it closed a gap in domestic production technology. The alumina powder comes from Zibo itself. Nothing about this company was bought and bolted on. 2009 年那套工艺不是买来的。它来自与高校、研究院一年多的联合试验，填补了国内该项生产技术的空白。氧化铝粉体就产自淄博本地。这家企业身上，没有一样东西是买来装上去的。
Five families, each defined by the heat it has to live in.五个系列，各自由它必须待住的温度定义。
Nitrogen does the bonding. We control what it does it under.结合相由氮气生成，我们控制它生成的条件。
Tell us the operating window, not the part number.告诉我们工况，而不只是型号。
Temperature, atmosphere, cycle, and what failed last time. Four things, and we can usually come back with a grade and a geometry. 温度、炉内气氛、生产节奏，以及上次是怎么坏的。四项，通常就够我们给出材质与结构方案。