Titanium Thiab Gases

Titanium yog tshuaj ruaj khov rau feem ntau cov kua thiab cov khib nyiab, txawm tias tiv taus aqua regia corrosion, tab sis qhia tshwj xeeb kev ua haujlwm rau cov pa roj. Nws tuaj yeem cuam tshuam nrog ntau yam roj av thiab nyob ruaj khov hauv cov huab cua tshwj xeeb. Kev sib cuam tshuam ntawm titanium thiab gases ncaj qha txiav txim siab nws txoj kev npaj, ua, kev tswj kom zoo, thiab kev txwv kev siv engineering. Nws yog ib qho teeb meem tseem ceeb hauv kev nkag siab txog cov khoom ntawmcov ntaub ntawv titanium.

Oxygen yog cov pa roj ntau tshaj plaws thiab muaj txiaj ntsig zoo rau titanium, thiab lawv cov kev sib cuam tshuam los ntawm kev npaj, kev ua, thiab kev siv titanium. Nyob rau hauv chav tsev kub, ib tug ntom nano- nplai titanium dioxide oxide zaj duab xis sai sai rau saum npoo ntawm titanium, tsim ib tug ntuj tiv thaiv txheej uas thaiv corrosive media thiab endows zoo heev biocompatibility. Cov yeeb yaj kiab tuaj yeem ua tus kheej- kho hauv qhov chaw aerobic tom qab kev puas tsuaj, uas yog tus yuam sij rau titanium qhov kev tiv thaiv corrosion thiab siv tau hauv tib neeg lub cev thiab qhov chaw ntub dej.

Cov tshuaj tiv thaiv hnyav dua li qhov kub thiab txias: cov oxide zaj duab xis pib thicken saum 400 degree, thiab cov tshuaj tiv thaiv yuav ua nruj ua tsiv los yog combustion yuav tshwm sim saum 600 degree. High - kub oxidation yog ob qho tib si muaj kev pheej hmoo yuav tsum tau tswj nruj me ntsis thaum ua thiab ib txoj hauv kev los npaj cov txheej txheem oxide ruaj khov los ntawm thermal oxidation, uas txhim kho qhov hnav thiab corrosion kuj ntawm titanium. Titanium smelting yuav tsum tau ua raws li kev tiv thaiv ntawm inert gas kom tsis txhob oxidation cuam tshuam cov khoom purity.

Kev sib cuam tshuam ntawm titanium thiab nitrogen kuj tseem ruaj khov ntawm qhov kub thiab txias ntawm qhov kub thiab txias. Lawv yeej tsis hnov ​​​​tsw ntawm chav tsev kub, tab sis hnov ​​​​mob hnyav rau daim ntawv titanium nitride (TiN) nrog rau siab hardness thiab hnav tsis kam ntawm 800-1000 degree.

Titanium nitride yog xim daj daj, ua ke nrog kev ua tau zoo thiab kev zoo nkauj, thiab feem ntau yog siv los ua cov txheej txheem rau kev ua haujlwm ntev thiab txhim khu kev zoo nkauj. Nitriding kev kho mob ntawm titanium yuav tsum muaj kev tswj xyuas nruj ntawm huab cua purity-oxygen tsim cov oxide zaj duab xis uas cuam tshuam cov tshuaj tiv thaiv, ua rau xoob nitrided txheej nrog tsis zoo adhesion. Siab -purity nitrogen feem ntau yog siv nrog cov khoom kaw kom txo tau kev cuam tshuam los ntawm impurities xws li oxygen thiab dej vapor.

Kev sib cuam tshuam ntawm hydrogen thiab titanium yog ob - ntaj ntug, nrog rau ob qho tib si tus nqi thiab kev nyab xeeb. Titanium muaj hydrogen solubility tsawg nyob rau hauv chav tsev kub, tab sis lub solubility nce ho nrog cua sov, thiab hydrogen nkag mus rau hauv lub lattice los tsim titanium hydrides.

Hydrogen tuaj yeem siv los ua tus neeg sawv cev txo qis hauv kev npaj los txhim kho qhov purity thiab stability ntawm titanium; Txawm li cas los xij, kev nqus dej ntau dhau thaum ua haujlwm ua rau hydrogen embrittlement, txo cov khoom toughness, nce brittleness, thiab yooj yim ua rau tawg thiab tsis ua hauj lwm. Qhov teeb meem no tshwj xeeb tshaj yog nyob rau hauv nuclear zog scenarios zoo li nuclear pov tseg tanks -titanium yog nquag hydrogen absorption thiab embrittlement nyob rau hauv oxygen- dawb, siab - kub, thiab siab - ib puag ncig kev nyuaj siab. Inhibiting hydrogen diffusion thiab hydrogen embrittlement yog ib qho kev sib tw tseem ceeb rau nws cov ntawv siv hluav taws xob nuclear.

Cov kev tshawb fawb uas twb muaj lawm tau pom tias cov thev naus laus zis zoo li cov yas deformation tuaj yeem txhim kho titanium lub zog thiab cuam tshuam hydrogen diffusion thiab hydride tsim, muab cov kev taw qhia tshiab rau kev txhim kho nws cov kev pabcuam.

Tsuas yog cov pa oxygen, nitrogen, thiab hydrogen, titanium tuaj yeem cuam tshuam nrog ntau yam gases xws li carbon dioxide, dej vapor, thiab methane. Thaum kub kub, titanium reacts nrog dej vapor los tsim titanium dioxide thiab hydrogen, exacerbating hydrogen embrittlement; Cov tshuaj tiv thaiv nrog methane tuaj yeem tsim titanium carbide, cuam tshuam rau nws cov khoom siv kho tshuab.

Inert gases, argon yog tshuaj ruaj khov thiab tsis hnov ​​​​mob nrog titanium, yog li lawv feem ntau siv los tiv thaiv cov pa roj thaum lub sij hawm titanium smelting, kub ua hauj lwm, thiab vuam kom cais cov huab cua thiab tiv thaiv oxidation thiab nitridation. Nyob rau hauv cov txheej txheem xws li siab - kub nias, siab - purity argon yuav tsum tau tsim ib qho chaw inert nyob rau hauv thiaj li yuav tiv thaiv impurity gases los ntawm embrittling titanium thiab txo toughness kom ruaj khov khoom.

Baoji Ruihang, cov chaw tsim khoom ntawm titanium thiab cov khoom tsis yog -ferrous hlau, tshwj xeeb hauv R&D, ntau lawm thiab muag khoom. Pab neeg pabcuam pofessional tau sawv los ntawm koj qhov kev nug.Yog xav paub ntxiv, thov tsis txhob yig tiv tauj peb los ntawm email:Sam.Rui@bjrh-titanium.com.