ISO 27307:2015 PDF

Name: ISO 27307:2015 — Thermal spraying — Evaluation of adhesion/cohesion of thermal sprayed ceramic coatings by transverse scratch testing
SKU: ISO 27307:2015
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Thermal spraying — Evaluation of adhesion/cohesion of thermal sprayed ceramic coatings by transverse scratch testing

Название (английский):

ISO 27307:2015

Thermal spraying — Evaluation of adhesion/cohesion of thermal sprayed ceramic coatings by transverse scratch testing

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 26
Дата публикации:: 17 июня 2015 г.
Издание:: ISO IS 27307 edition 1 version 1
ICS:: 25.220.20

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Цена:390 €

Описание (английский):

ISO 27307:2015 specifies a method for adhesion and cohesion evaluation of thermal sprayed ceramic coating-substrate systems by means of a transverse scratch test. This International Standard is suitable for thermal sprayed ceramic coatings with thickness from 50 μm to over 1 000 μm. It is also suitable for testing ceramic coatings deposited by other spray coating processes, such as cold spray, as well as aerosol deposition.

Abstract

Похожие стандарты

Упомянутые в описании и другие стандарты ISO

Overview

ISO 27307:2015 specifies a standardized transverse scratch test method to evaluate adhesion and cohesion of thermal sprayed ceramic coatings on substrates. The method applies to coatings from 50 μm up to and beyond 1 000 μm thickness and is also suitable for ceramic layers produced by cold spray, aerosol deposition and other spray processes. The test uses a defined diamond indenter drawn across a polished cross‑section of the coating-substrate system to distinguish cohesive failure (within the coating) from adhesive failure (at an interface).

Key Topics and Requirements

Scope & principle

Transverse scratch across a cross‑section; failure mode and load thresholds indicate coating strength and adhesion.

Specimen preparation

Recommended specimen size ~20 × 20 mm; cross‑section embedded and polished to Ra < 0.5 μm.
Clean test area (alcohol/acetone); avoid fingerprints.

Equipment

Diamond indenter (Rockwell conical geometry recommended); recommended tip radius 20 μm.
Scratch tester calibrated per ISO 20502; optional acoustic emission sensor and tangential-force monitoring supported.

Test conditions

Scratch length 2–3 mm; traverse speed 0.1–10 mm/min.
Typical constant normal loads start at 3 N and proceed (examples: 3, 5, 10, 13, 15, 20 N) until adhesive failure is observed.
At least 5 scratches per load (to account for coating heterogeneity).
Environmental control recommended: 22 °C ± 2 °C, 50 % ± 5 % RH.

Evaluation & reporting

Classify failures as no crack, cohesive crack, or adhesive crack; a mode is considered dominant if >30% of observations.
Report must include environmental conditions, coating/substrate materials and thickness, coating process, indenter tip radius, traverse speed, test loads, and percentage of each failure mode.

Applications - Who Uses ISO 27307:2015

Coating manufacturers and process engineers validating thermal barrier, wear‑resistant or corrosion‑protective ceramic coatings.

Quality control and R&D labs assessing adhesion/cohesion of plasma spray, cold spray, aerosol-deposited ceramics.

Material scientists comparing coating-substrate systems, or verifying process changes and design choices.

Procurement/specification writers who need a repeatable method to rank coating performance.

Related Standards

ISO 20502 - referenced for calibration and scratch test procedures for fine/advanced ceramic coatings.

ISO 27307:2015 provides a reproducible, cross‑sectional transverse scratch test protocol for quantifying and reporting adhesion and cohesion of thick and thin ceramic spray coatings - essential for reliable coating qualification, failure analysis, and process optimization.

ISO 27307:2015 PDF

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications - Who Uses ISO 27307:2015

Related Standards

Технические детали

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