High-quality GaAs epilayer is obtained by employing the technologies of the tilted Si substrate optimization the low temperature Al ( GaAs ) As buffer layer and thermal cycle annealing .

u901au8fc7u63a2u7d22u6709u504fu89d2 u886cu5e95u3001Aluff08GaAsuff09Asu4f4eu6e29u7f13u51b2u5c42u548c u5faau73afu70edu9000u706bu7b49u6280u672fu7684u6700u4f18u6761u4ef6uff0cu5728Si u886cu5e95 u4e0au5916u5ef6u751fu957fu51fau4e86u9ad8u8d28u91cfu7684GaAsu6750u6599u3002

Wastewater from a pharmaceutical factory preparing traditional Chinese medicines was used as substrate . While degradation of substrate by IC ( Intermittent Cycle ) technology was examined the ability of biological removal of phosphorus and nitrogen technological conditions and mechanism were also studied .

u672cu6587u4ee5u4e2du836fu5236u836fu5e9fu6c34u4e3au5bf9u8c61uff0cu63a2u8ba8u4e86ICuff08 Intermittent Cycleuff09u5de5u827au5728 u57fau8d28u964du89e3u7684u540cu65f6uff0cu5176u751fu7269u9664u78f7u7684u80fdu529buff0cu5404u79cdu56e0u7d20u5bf9u751fu7269u78f7u3001u6c2eu53bbu9664u7684u5f71u54cduff0cu4ee5u53cau5de5u827au6761u4ef6u548cu673au7406u3002

However cracks initialized in the diffusion layer between substrate and bond coat when TBCs were tested with low cycle fatigue at high temperature .

u800cu5728u9ad8u6e29u4f4e u5468u75b2u52b3u6761u4ef6u4e0bu88c2u7eb9u662fu5728u7c98u7ed3u5c42u4e0eu9ad8u6e29u5408u91d1 u57fau4f53u7684u6269u6563u5c42u5904u3002

The oxidation protection for commercially obtained fused mullite coating on SiC-coated C / C substrate of high density comparatively offered an effective protection than the low density substrate after 106-h of isothermal oxidation cycle at 1500 u2103 .

1500u2103u9ad8u6e29u6c27u5316 106hu540euff0cu5728u9ad8u5bc6u5ea6u57fau4f53u4e0au83b7u5f97u7684u5546u4e1au83abu6765u77f3u6297u6c27u5316u5c42u6bd4u4f4eu5bc6u5ea6 u57fau4f53u7684u6d82u5c42u80fdu66f4u6709u6548u5730u5bf9u57fau4f53u8fdbu884cu4fddu62a4u3002