ʻO ke kala o ka pena pale wela kiʻekiʻe

ʻO ka pena wela kiʻekiʻe e hiki ke kū i ka oxidation kiʻekiʻe a me ke ʻano corrosion.ʻO ka ʻoihana uhi wela kiʻekiʻe ma ka laulā ma 100 ℃-1800 ℃, ʻo ka hapa nui o ka pena wela wela e hoʻohana i ka hopena wela kiʻekiʻe, hiki i nā koi pena i ke kaiapuni ke hoʻokō i nā waiwai kino paʻa (ʻaʻohe hoʻoheheʻe, ʻaʻohe ʻūlū, ʻaʻohe māwae, ʻaʻohe pauka, ʻaʻohe ʻōpala, e ʻae i kahi hoʻololi iki).ʻO ke koho maʻamau o ke kālā a ʻeleʻele paha, paʻa nā kala ʻelua, ʻaʻole maʻalahi e mae i ka wela kiʻekiʻe.ʻO ka Titanium dioxide ke kūpaʻa wela maikaʻi loa, ʻaʻole e hoʻololi i ka waihoʻoluʻu 350-400 ℃, a hiki i ka 1200 ℃ a 1300 ℃ e lilo i ʻeleʻele ʻeleʻele.

ʻO ka pale wela o ka zinc oxide i loko o ka puaʻa keʻokeʻo he 250 a 300 ℃, kūpono ka lithopone no ka wela lōʻihi ma 250 ℃.

I ka puaʻa ʻeleʻele, hoʻohana ʻia ka wela lōʻihi i ke kalapona ʻeleʻele ma 250 ℃, inā ʻoi aku ka mahana ma luna o 300 ℃, e mae ke kala.ʻO ka pale wela lōʻihi o ka pauka graphite a me ka manganese dioxide no 300 ℃.

ʻO ka puaʻa ʻulaʻula i loko o ka hao hao ʻulaʻula a me ka ʻulaʻula cadmium no 250 ℃ i ka wā wela lōʻihi.

Melemele, melemele a melemele cadmium strontium lōʻihi lōʻihi kiʻekiʻe wela hiki ke kū wale 200 ℃.