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中间层成分对GTD-111/IN-718高温合金在瞬时液相连接过程中显微组织和力学性能的影响

Transactions of Nonferrous Metals Society of China 2022年第3期32卷 908-926页

作者： ali izadi ghahferokhi Masoud KASIRI-ASGARANI Kamran AMINI Mahdi RAFIEI Reza EBRAHIMI-KAHRIZSANGI Advanced Materials Research Center Department of Materials EngineeringNajafabad BranchIslamic Azad UniversityNajafabadIran Center for Advanced Engineering Research Majlesi BranchIslamic Azad UniversityIsfahanIran

研究使用不同的中间层瞬时液相连接两种异种高温合金的适用性。在1100℃、不同时间下瞬时液相连接GTD-111/IN-718体系,研究BNi-2、BNi-3和BNi-9三种类型的中间层对该体系显微组织和力学性能的影响。采用场发射扫描电子显微镜和能量色散... 详细信息

研究使用不同的中间层瞬时液相连接两种异种高温合金的适用性。在1100℃、不同时间下瞬时液相连接GTD-111/IN-718体系,研究BNi-2、BNi-3和BNi-9三种类型的中间层对该体系显微组织和力学性能的影响。采用场发射扫描电子显微镜和能量色散光谱技术,研究接头区域的成分变化和显微组织。结果表明,非热凝固区Ni_(3)B的形成受B含量控制,相应地,Ni_(3)Si的形貌受Si含量控制。Cr含量可能会阻碍B从中间层向母材迁移,非热凝固区内Cr B的形成主要受Cr含量的影响。硼化物如镍或铬硼化物基体的形成,使共晶化合物具有高的显微硬度。与使用BNi-3和BNi-2中间层的合金接头相比,等温凝固结束后,使用BNi-9中间层的合金接头其剪切强度更低,这可能与金属焊料成分中不含Si和BNi-9中含Cr有关。

关键词：瞬时液相连接镍基高温合金等温凝固 Ni-B化合物

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An overview of travel-associated central nervous system infectious diseases:risk assessment,general considerations and future directions

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Asian Pacific Journal of Tropical Biomedicine 2014年第8期4卷 589-596页

作者： Morteza izadi Annan Is'haqi Mohammad ali Is'haqi Nematollah Jonaidi Jafari Fatemeh Rahamaty Abdolali Banki Baqiyatallah Hospital Baqiyatallah University of Medical SciencesTehranIran Department of Neurology Tehran University of Medical SciencesTehran.Iran Department of Infectious Diseases Rasoul Akram HospitalIran University of Medical SciencesTehran Iran Department of Neurology Baqiyatallah University of Medical SciencesTehranIran

Nervous system infections are among the most important diseases in *** travellers might be exposed to infectious agents of central nervous system,which may require in-patient *** course is not uncommon in this family of disorders and requires swift *** overview of the available evidence in the field ***,Urgent to pave the way to increase the awareness of travel-medicine practitioners and highlights dark areas for future *** November 2013,data were collected from PubMed,Scopus,and Web of knowledge(1980 to2013) including books,reviews,and peer-reviewed literature,Works pertained to pre-travel care,interventions,vaccinations related neurological infections were *** we provide information on pre-travel care,vaccination,chronic nervous system disorders,and post-travel *** with regard to knowledge gaps,and state-of-the-art research are *** an increasing number of international travellers,novel dynamic ways are available for physicians to monitor spread of central nervous system *** research has made great progresses in developing newer medications,detecting the spread of infections and the public *** an ongoing scientific discussion in the field of travel medicine,further research is required for vaccine development,state-of-the-art laboratory tests,and genetic engineering of vectors.

关键词： Travel medicine Infectious diseases Nervous system disorders

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Status of tissue engineering and regenerative medicine in Iran and related advanced tools: Bioreactors and scaffolds

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Journal of Biomedical Science and Engineering 2012年第4期5卷 217-227页

作者： Anneh Mohammad Gharravi Mahmoud Orazizadeh Mahmoud Hashemitabar Karim Ansari-Asl Salem Banoni ali alifard Sina izadi Cellular and Molecular Research Center Department of Anatomical Sciences Faculty of Medicine Ahvaz Jundishapour University of Medical Sciences Ahvaz Iran Computer Engineering Department Engineering Faculty Shahid Chamran University Ahvaz Iran Electrical Engineering Department Engineering Faculty Shahid Chamran University Ahvaz Iran Mechanical Engineering Department Engineering Faculty Shahid Chamran University Ahvaz Iran

Because of increased need to tissue and organ transplantation, tissue engineering (TE) researches have significantly increased in recent years in Iran. The present study explored briefly the advances in the TE approaches in Iran. Through comprehensive search, we explored main TE components researches include cell, scaffold, growth factor and bioreactor conducted in Iran. The field of TE and regenerative medicine in Iran dates back to the early part of the 1990 decade and the advent of stem cell researches. During past two decades, Iran was one of leader in stem cell research in Middle East. The next major step in TE was application and fabrication of scaffolds for TE in the early 2000s with focused on engineering bone and nerve tissue. Iranian researchers extensively used natural scaffolds in their studies and hybridized natural polymers and inorganic scaffolds. There are many universities and government research institutes are conducting active research on tissue-engineering technologies. Limitations to TE in Iran include property design and validation of bioreactors. In conclusion, in the last few years, fields of tissue engineering and regenerative medicine such as stem cell technology and scaffolds have progressed in Iran, but one of the biggest challenges for TE is bioreactors researches.

关键词： Iran Tissue Engineering Cell Scaffold Signal Bioreactor

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Noncoaxial Progressive Deformation of Pegmatoied dykes, Sanandaj Sirjan Zone, Iran

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Acta Geologica Sinica(English Edition) 2016年第S1期90卷 161-页

作者： Leili izadi KIAN Department of Geology Bu-Ali Sina University

The Sanandaj-Sirjan metamorphic zone experienced a polyphase deformation history,which is related to the Zagros orogenic *** the northwestern part of Sanandaj-Sirjan zone many pegmatoied dykes intruded in

关键词： Iran Noncoaxial Progressive Deformation of Pegmatoied dykes Sanandaj Sirjan Zone

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Microstructure Analysis of Syntectonic Dykes in NW of Alvand Pluton, Sanandaj Sirjan Zone, Iran

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Acta Geologica Sinica(English Edition) 2016年第S1期90卷 160-页

作者： Leili izadi KIAN Department of Geology Bu-Ali Sina University

The study area is located at the northwestern Alvand pluton in northwest of the Sanandaj-Sirjan *** Sanandaj-Sirjan zone is metamorphic belt which is related to the Zagros orogenic *** rocks in this area is

关键词： Sanandaj Sirjan Zone Iran

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