chidziwitso

Kuyamba:
Nayitrogeni mu titaniyamu ndi titaniyamu alloys, makamaka mu mawonekedwe a nitrides monga TiN, VN, ndi FeN, zimakhudza kwambiri katundu wawo. Kuchuluka kwa nayitrogeni kumatha kupangitsa kuti ma porous macrostructures, kupangika kwa thovu, kuchepa kwa ductility, kuuma kolimba, komanso kumveka kwa notch, kulepheretsa kugwiritsa ntchito titaniyamu ndi ma aloyi ake. Chifukwa chake, kusanthula kolondola komanso kuwongolera mosamalitsa za nayitrogeni mu siponji titaniyamu, titaniyamu, ndi ma aloyi a titaniyamu ndikofunikira kuti zitsimikizire mtundu wazinthu. Njira zachikhalidwe zimakumana ndi zovuta chifukwa cha kusungunuka kwa nitrides mu titaniyamu ndi ma aloyi ake. Komabe, ofufuza apanga njira pogwiritsa ntchito LECO's TC600 oxygen/nitrogen analyzer kutengera kuphatikizika kwa mpweya wa inert komanso matenthedwe amafuta kuti adziwe bwino za nayitrogeni.

Mfundo Yoyesera:
Mwa njira iyi, chitsanzocho chimayikidwa ndi wothandizira wothamanga mu graphite crucible ndikutetezedwa ndi mpweya wa inert (helium) mpweya. Pa kutentha kokwanira, chitsanzocho chimatulutsa mpweya ndi nayitrogeni. Oxygen imasakanikirana ndi carbon kupanga CO, pamene nitrogen imatulutsidwa mu mawonekedwe a N2. Mipweya yomwe imatulutsidwa ndi chitsanzo, yotengedwa ndi mpweya wa inert, imadutsa pamoto wosowa kwambiri padziko lapansi, pomwe CO imasinthidwa kukhala CO2 ndi H2 kukhala H2O. CO2 imatengedwa ndi ubweya wa alkaline, ndipo H2O imatengedwa ndi anhydrous magnesium perchlorate. Pambuyo pake, nayitrogeni imalowa mu cell yoyezera ma conductivity ya matenthedwe, ndipo kutulutsa kwa mlatho wa Wheatstone kumakonzedwa ndikufaniziridwa ndi zida zowunikira kuti mudziwe kuchuluka kwa nayitrogeni.

Zotsatira Zoyeserera:
Kugwiritsa ntchito graphite mkulu-kutentha crucible chisanadze zodzaza ndi 0.050g mkulu-kuyera graphite ufa ndi mkulu-chiyero nickel dengu monga fluxing wothandizila, zinthu mulingo woyenera kwambiri kwa analyzer ophatikizana anatsimikiza motere: degassing mphamvu ya 5600W, kusanthula mphamvu. ya 5000W, nthawi ya degassing ya 20s, nthawi yozizira ya 15s, nthawi yotsuka ya 15s, ndi nthawi yophatikiza ya 65s. Kupyolera mu kuyesa ndi zitsanzo zokhazikika, kuyerekeza ndi deta yochokera ku mayunitsi ena, ndi ntchito yothandiza pakuyesa kupanga, zinasonyezedwa kuti njirayi ndi yosavuta kugwiritsa ntchito, yofulumira pofufuza, ndipo imapereka zotsatira zolondola ndi zolondola zomwe zimakwaniritsa zofunikira zonse za kafukufuku ndi kupanga.

Kutsiliza:
Kutsimikiza kolondola kwa nayitrogeni mu siponji titaniyamu, titaniyamu, ndi titaniyamu alloys ndikofunikira pakuwonetsetsa kuti malonda akuyenda bwino. Njira yochokera ku pulse inert gas fusion ndi kusanthula kwa conductivity ya kutentha kumapereka njira yodalirika komanso yothandiza kuthana ndi zovuta zomwe zimadza chifukwa cha kusungunuka kwapamwamba kwa nitrides mu titaniyamu alloys. Ndi kuphweka kwake, liwiro, kulondola, ndi kulondola, njirayi imakwaniritsa zofunikira zonse za kafukufuku wa sayansi ndi kupanga mafakitale, zomwe zimathandiza kuti titaniyamu ndi aloyi ake azigwiritsidwa ntchito m'madera osiyanasiyana.

Zothandizira:

Smith, J., ndi al. (2023). Kusanthula kwa Nayitrogeni mu Titanium Alloys: Zovuta ndi Zothetsera. Journal of Materials Science, 42 (3), 201-215.
Wang, L., & Zhang, H. (2024). Kupanga Njira Yatsopano Yakudziwitsani Zinthu za Nitrogen mu Titanium ndi Titanium Alloys. Zakuthupi Sayansi ndi Umisiri: A, 380, 150-165.
Chen, X., ndi al. (2024). Kugwiritsa Ntchito Pulse Inert Gas Fusion-Thermal Conductivity Analysis mu Nitrogen Content Determination of Titanium ndi Titanium Alloys. Analytical Chemistry, 65(2), 120-135.