I-siliconized graphite iyinhlanganisela yezinto lapho i-silicon carbide ixhunywe khona ebusweni be-graphite substrate. Inezici zokuqina okuphezulu, amandla aphezulu emishini kanye nokumelana nokugqoka kwe-silicon carbide, kanye nezakhiwo zokuzithambisa kanye nokumelana nokushaqeka okushisayo kwegraphite. Kuyimpahla ekahle yokungqubuzana nezinto ezisetshenziswayo zokuvala uphawu, ezifanele ukuvalwa kwemishini kwamaphampu amanzi ahlukahlukene, amaphampu kawoyela, amaphampu amakhemikhali, nama-bearings amaphampu amakhulu anesivinini esikhulu futhi anomthwalo omkhulu. Ngaphezu kwalokho, i-siliconized graphite inokumelana okuhle kwe-oxidation, ukumelana nokushaqeka okushisayo, i-porosity ephansi, kanye nokuhamba okuthile kagesi, futhi ingasetshenziswa njengezinto ezifana nezinsimbi zokuncibilikisa insimbi namashubhu okusalungiswa.
Ukwakheka kwe-siliconizedi-graphite iyunifomu, indawo engaphezulu ihambisana nengaphakathi, futhi isilinganiso sokwakheka kwe-silicon carbide ne-graphite siyalungiseka. Ukuphakama kokuqukethwe kwe-silicon carbide, kukhulu ukuminyana kwezinto, kuyanda amandla okucindezela, futhi ukumelana nokuqina kuyanda.
Isithombe se-metallographic se-siliconizedi-graphite
(ingxenye emnyama i-graphite, ingxenye empunga i-silicon carbide, kanti ingxenye emhlophe yi-silicon)
硅化石墨主要技术指标 | |
类别 Into | 指标 Inani |
密度 Ukuminyana | 2.4-2.9g/cm³ |
孔隙率 I-Porosity | <0.5% |
抗压强度Amandla acindezelayo | > 400MPa |
抗折强度 Amandla e-Flexural Amandla e-Flexural | > 120MPa |
热导率 I-Thermal conductivity | 120W/mK |
热膨胀系数I-coefficient yokwandisa ukushisa | 4.5×10-6 |
弹性模量I-Elastic module | I-120GPa |
冲击强度Amandla okuthinta | 1.9KJ/m² |
水润滑摩擦系数 Ukungqubuzana okugcotshisiwe kwamanzi | 0.005 |
干摩擦系数I-coefficient eyomile yokungqubuzana | 0.05 |
化学稳定性 Ukuzinza kwamakhemikhali | 各种盐,有机溶剂,强酸(HF,HCl,H₂SO4,HNO₃) Ama-salts ahlukahlukene, ama-solvents e-organic, ama-asidi aqinile (HF,HCl,H₂SO4,HNO₃) |
长期稳定使用温度 Izinga lokushisa elizinzile lesikhathi eside | 800℃(氧化气氛), 2300℃(惰性或真空气氛) 800 ℃ (umkhathi oxidizing), 2300 ℃ (i-inert noma i-vacuum atmosphere) |
电阻率 Ukumelana nogesi | 120×10-6Ωm |