The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts
The Ni-B alloy deposited on ferrous powder metal compacts by electroless coating method and its morphology, structure and microhardness were investigated. Some of the coated specimens were heat treated at different temperatures (300, 400 and 500 °C) as isothermal for 1 h. The phases and morphology...
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| Format: | Article |
| Language: | English |
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Gazi University
2017-06-01
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| Series: | Gazi Üniversitesi Fen Bilimleri Dergisi |
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| Online Access: | http://dergipark.gov.tr/download/issue-file/5678 |
| _version_ | 1828015610483703808 |
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| author | Ulaş MATİK |
| author_facet | Ulaş MATİK |
| author_sort | Ulaş MATİK |
| collection | DOAJ |
| description | The Ni-B alloy deposited on ferrous powder metal compacts by electroless coating method and its morphology, structure and microhardness were investigated. Some of the coated specimens
were heat treated at different temperatures (300, 400 and 500 °C) as isothermal for 1 h. The phases and morphology of coatings were examined by x-ray diffraction (XRD) and scanning electron
microscope (SEM). Phase transformation behavior was studied by differential scanning calorimetry (DSC). Microhardness of Ni-B coatings and PM compacts were evaluated using a Qness Q10 micro Vickers tester. The results showed that, Ni-B coating had an amorphous structure in the coated state but after heat treatment, it turned into a crystalline structure. It was found that nickel borides (Ni2B, Ni3B) precipitated in the nickel matrix. It was determined that precipitation has caused the increase of hardness. The maximum hardness was provided in the heat treated Ni-B coating at 400 °C. |
| first_indexed | 2024-04-10T10:20:26Z |
| format | Article |
| id | doaj.art-be67403b703b4de98667df540609c99b |
| institution | Directory Open Access Journal |
| issn | 2147-9526 2147-9526 |
| language | English |
| last_indexed | 2024-04-10T10:20:26Z |
| publishDate | 2017-06-01 |
| publisher | Gazi University |
| record_format | Article |
| series | Gazi Üniversitesi Fen Bilimleri Dergisi |
| spelling | doaj.art-be67403b703b4de98667df540609c99b2023-02-15T16:21:39ZengGazi UniversityGazi Üniversitesi Fen Bilimleri Dergisi2147-95262147-95262017-06-0152223230The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal CompactsUlaş MATİKThe Ni-B alloy deposited on ferrous powder metal compacts by electroless coating method and its morphology, structure and microhardness were investigated. Some of the coated specimens were heat treated at different temperatures (300, 400 and 500 °C) as isothermal for 1 h. The phases and morphology of coatings were examined by x-ray diffraction (XRD) and scanning electron microscope (SEM). Phase transformation behavior was studied by differential scanning calorimetry (DSC). Microhardness of Ni-B coatings and PM compacts were evaluated using a Qness Q10 micro Vickers tester. The results showed that, Ni-B coating had an amorphous structure in the coated state but after heat treatment, it turned into a crystalline structure. It was found that nickel borides (Ni2B, Ni3B) precipitated in the nickel matrix. It was determined that precipitation has caused the increase of hardness. The maximum hardness was provided in the heat treated Ni-B coating at 400 °C.http://dergipark.gov.tr/download/issue-file/5678Electroless coatingNi-B coatingHeat treatmentHardnessPowder Metallurgy |
| spellingShingle | Ulaş MATİK The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts Gazi Üniversitesi Fen Bilimleri Dergisi Electroless coating Ni-B coating Heat treatment Hardness Powder Metallurgy |
| title | The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts |
| title_full | The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts |
| title_fullStr | The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts |
| title_full_unstemmed | The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts |
| title_short | The Influence of Heat-treatment on Hardness and Structural Characteristics of Electroless Ni-B Deposited Ferrous Powder Metal Compacts |
| title_sort | influence of heat treatment on hardness and structural characteristics of electroless ni b deposited ferrous powder metal compacts |
| topic | Electroless coating Ni-B coating Heat treatment Hardness Powder Metallurgy |
| url | http://dergipark.gov.tr/download/issue-file/5678 |
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