Enqubweni yokukhiqiza ye-astm a179ipayipi lensimbi elibandayo elidonswe nekhono, kukhona ukuqina okubandayo kanye ne-hydrogen embrittlement phenomenon, ebangelwa ukuqhekeka kweshubhu elingenamthungo elidonswa ngokubanda isizathu esiyinhloko.

Ukuhlaziywa kwesenzakalo sokuqhuma kwepayipi elibandayo le-astm a179 elidonswayo elingenamthungo kuwububanzi obuncane bepayipi lensimbi elingenamthungo ngokusebenzisa umdwebo wokwakheka okubandayo okwenza amakhaza, umzila wenqubo ngokuvamile uyahoxisa, ukucosha, nokudweba.Ipayipi elincane lensimbi elingenamthungo elidonswe ngamakhaza elincane elinobubanzi obubandayo kunqubo yokudweba, ngezinye izikhathi ukusuka ekuqaleni kuye ekugcineni njengokufana nokuqhekeka kwe-bamboo cracker, lesi simo sikubiza ngokuthi ukuqhekeka.

Izizathu zokuqhekeka yilezi:

Umphumela wokuqina komsebenzi, ipayipi lensimbi likhiqiza inani elikhulu lokuguqulwa kwepulasitiki ngesikhathi sokudweba okubandayo, okubangela ukuphazamiseka okuphawulekayo kwe-lattice, okwandisa amandla e-lattice futhi kwandise amandla angaphakathi ensimbi, okuholela ekucindezelekeni okungalingani kwangaphakathi kwensimbi kanye nokucindezeleka okusalayo okusele. .Lokhu kuzokwandisa ubulukhuni bensimbi, ukuqina kwehle.Ukuphakama kokuqina kwensimbi, kuyanda ukucindezeleka kwangaphakathi okusalayo ngesikhathi sokudweba okubandayo, kusobala kakhulu umsebenzi oqinisayo.Lapho ingcindezi eyinsalela ifinyelela inani elithile, insimbi izodabula isixhumi esibonakalayo sokusanhlamvu, ukwakheka kokuqhekeka kwepayipi lensimbi.

Umthelela we-hydrogen embrittlement, ngesikhathi sokwehla nge-asidi, i-sulfuric acid ne-iron kusabela ekuncipheni kwe-hydrogen.I-hydrogen ingena ensimbi ngendlela yama-athomu noma ama-ion ukuze yakhe isixazululo esiqinile.Umthelela we-hydrogen ezintweni zensimbi zensimbi ufana ne-hydrogen embrittlement.