成果報告書詳細
管理番号20150000000309
タイトル*平成26年度中間年報 エネルギー・環境新技術先導プログラム 高温岩体発電に向けた超耐食タービンのためのマルチビームレーザ表面改質の研究 
公開日2015/7/18
報告書年度2014 - 2014
委託先名富士電機株式会社 国立大学法人大阪大学接合科学研究所
プロジェクト番号P14004
部署名イノベーション推進部
和文要約
英文要約Title:Research of a Multi-beam laser surface treatment for ultra corrosion-resistant turbine to realize the hot dry rock geothermal power generation. (FY2014-FY2015) FY2014 Annual Report


The objective of this research is to develop corrosion protection coating technology for ultimate environment of hot dry rock geothermal gas and three-dimensional double-curved surface of turbine blades.
This technology is necessary for practical realization of the hot dry rock geothermal plants which can make high-degree application of energy of deep hot dry rocks.
in order to innovate this technology, it is necessary to minimize HAZ (heat affected zone) of coating ,because HAZ is the reduction factor of corrosion resistance.
In order to solve this problem, we research a laser cladding technique for minimizing HAZ by using a multi-stage heat input by the coordinated control with multi-beam.
We research the following items

1. Development of coating material that can both corrosion resistance and cladding characteristics
2. Development of monitoring method of a laser heating section, and a multi-beam coordinated control algorithm
3. Optimization of laser power and temperature profiles for minimizing HAZ, and Melting surface of cladding layer

We are promoting the following items at fiscal 2014

1-1 Development of coating materials that have high corrosion resistance and good cladding characteristics
Start to investigate corrosion environment of hot-dry-rock layers and select coating materials proper for the severe corrosion environment as follows.
1.Examine concept and specifications of cladding system for the coating.
2.Evaluate property of the coating materials including cobalt alloys for turbine blades of hot dry rocks geothermal plants.
3.Survey current and topics of corrosion environment testing and residual stress determination.

1-2 Development of a monitoring method of laser heating section and a multi-beam coordinated control algorithm
Start to examine concepts and specifications of thermal monitoring laser-irradiated area and multi-laser-beams control algorism aimed for both cladding and heat treatments.
1.Make decisions of wavelength, power density and irradiated size of laser used in this research on the basis of literature searching from the viewpoint of efficiency.
2.Survey current and topics of laser heat treatments and an associated process.
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